Strum Session 2 in Logic Pro: Setup and Workflow

Strum Session 2 is not one of Logic Pro's built-in Session Players. It is a third-party guitar instrument from Applied Acoustics Systems, loaded on a Software Instrument track as an Audio Unit. That distinction matters because the install path, chord control and troubleshooting are completely different. If you meant Apple's drummer, keyboard, bass or synth performers, use our Logic Pro Session Players and Chord ID guide instead.

If you do own AAS Strum Session 2, the fastest useful setup is simple: install the current AU build, load it from the Instrument slot, choose Guitar mode, leave Auto-Strum on and record a four-bar chord part. Once that works, turn Auto-Strum off and separate the chord changes from the picking-hand triggers. That's the point where the plug-in stops behaving like a keyboard patch and starts producing a controllable rhythm-guitar performance.

Quick verdict: what Strum Session 2 is good at

Strum Session 2 is best at getting an editable acoustic or electric rhythm-guitar part into an arrangement without recording a real guitar. It uses physical modeling rather than a large sample library, detects keyboard chords, picks guitar-style voicings and lets MIDI notes trigger downstrokes, upstrokes, muted hits, individual strings or loop patterns. It's light on storage, and quick to revise when the song changes key or structure.

Its weak point is exposure. A busy pop arrangement can hide the last bit of synthetic character. A sparse singer-songwriter intro will put it right out front. Use it for writing, demos, layered rhythm parts and productions where editability matters. If the guitar is the emotional center of the record, a properly recorded player will usually carry more detail. Our Logic Pro guitar-recording workflow covers that route.

Install and open Strum Session 2 in Logic Pro

1. Download the current AAS installer. The AAS support index listed Strum Session 2 version 2.4.5 when this guide was checked on August 30, 2026. Use the installer from your AAS Registered Products page or the current Session Bundle page, not an old installer saved with a controller bundle.
2. Include the Audio Unit. Logic Pro hosts the AU build. AAS also supplies other formats, but installing VST alone will not put the instrument in Logic's AU Instruments menu.
3. Restart Logic Pro after installation. If the instrument does not appear, restart the Mac before deleting caches or performing a full reset. Apple's missing-plug-in procedure begins with that low-risk check.
4. Create a Software Instrument track. Open its Instrument slot and choose AU Instruments > Applied Acoustics Systems > Strum Session 2 > Stereo. In current Logic versions you can also use the search field at the top of the plug-in menu.
5. Confirm that MIDI reaches the instrument. Play a controller key or draw a short region in the Piano Roll. The MIDI indicator in Strum Session should react and the track meter should show audio.

If this is your first third-party instrument, the broader Logic Pro AU installation guide explains component locations, validation and safe updating. Do not move plug-in files around at random. Apple documents the normal component folders as /Library/Audio/Plug-Ins/Components and ~/Library/Audio/Plug-Ins/Components.

Build the first playable guitar part

Start with a job you can hear: four bars, four chords, one sound. Load an acoustic preset, select Guitar mode and keep Auto-Strum enabled. Record the chords in time, and don't try to program every stroke yet. Strum Session detects the chord, chooses a guitar voicing and triggers a downstroke when the chord changes.

Then clean the MIDI in Logic. Move late chord changes, fix wrong notes and shorten any chord that should stop before the next one. Don't hard-quantize every note to the same start unless the part is meant to sound rigid. A guitarist needs the fretting hand in place before the picking hand crosses the strings, so the chord information should land just before a separate strum trigger. The AAS manual makes the same practical point in its performance section.

Controller octave labels aren't consistent, so use MIDI note numbers when the mapping feels wrong. In Guitar mode, AAS assigns MIDI 40 through 71 to chord input and MIDI 72 through 83 to picking-hand triggers. On the trigger side, MIDI 72 produces a downstroke, 73 a palm-muted downstroke, 74 an upstroke and 75 an alternate bass. Those four notes are enough to build a convincing first pattern.

Use Guitar mode for a controlled performance

Once the harmony is correct, turn Auto-Strum off. Keep each chord held in the chord area and put the stroke notes in the trigger area. Now chord choice and rhythm are independent. The lower notes tell Strum Session what the fretting hand is doing, and the upper notes tell it when and how the picking hand moves.

A useful one-bar pop pattern is down, muted down, up, down. Vary the trigger velocity instead of copying one value across the bar. Lower and higher velocities can change the attack and, depending on the Strumming settings, the speed of the stroke. Add an alternate-bass trigger before selected downbeats for country or folk movement. If a voicing jumps awkwardly, adjust the chord type or playing position before reaching for EQ.

Keep the rhythm readable in the Piano Roll. One lane of sustained chord notes plus a clearly separated lane of short stroke triggers is easier to repair than a dense block of duplicated notes. If MIDI editing still feels slow, our Logic Pro Piano Roll guide covers velocity, note length and selection tools, while the MIDI controller setup guide handles input and octave problems.

Use Loop mode without surrendering the arrangement

Loop mode is useful when the performance needs a developed strumming pattern immediately. Each Strum Session preset stores a pack of seven MIDI loops. The seven white Loop keys from C through B trigger the patterns while the chord area supplies the harmony. With Sync To Host enabled, the loop follows Logic's project tempo.

Don't let a preset loop decide the entire song. Pick a pattern for the verse, then change its density or choose a related pattern for the chorus. Stop or mute it at phrase endings. Loop mode is there to supply picking-hand motion. The arrangement still needs rests, accents and section contrast.

For a more editable result, record the MIDI performance into Logic and keep the source region before you bounce anything. Name the region by section, and duplicate it only after the first four or eight bars work. That keeps chord corrections reversible, and it stops the guitar turning into a two-minute copy of one bar.

Make Strum Session 2 sound less programmed

• Separate chord preparation from the stroke. Put the chord slightly before the trigger instead of landing every note on the same tick.
• Alternate direction. Repeating only downstrokes is believable for some parts, but most open rhythm patterns need upstrokes and quieter in-between motion.
• Use muting as punctuation. Palm-muted or muffled strokes create groove; a full chord on every subdivision creates a wall.
• Change voicing before processing. An awkward chord position cannot be repaired by adding treble or compression.
• Leave space. Shorten selected chords and remove triggers at vocal pickups, fills and transitions.
• Double with a different performance. For width, record a second MIDI performance with a related sound, altered voicing and changed velocity. Duplicating the same region and panning it does not create independent timing.

Process after the performance works. High-pass only if the modeled body is fighting the bass or kick. Cut harshness only where the chosen preset needs it. Compression should fix a real dynamic problem, not compensate for identical velocities. The site's Logic Pro Channel EQ guide and Logic Pro Compressor guide explain those decisions without preset numbers.

Strum Session 2 versus Strum GS-2

AAS describes the Session instruments as simplified versions of its Professional Series. Strum Session 2 keeps the core physical-modeling guitar, chord detection, voicing, strumming and loop workflow, but you get fewer editing possibilities and a smaller factory library than Strum GS-2. AAS also says its expansion sound packs don't load in the Session instruments.

That makes Session 2 the sensible choice when you already own the bundle and need fast rhythm parts. GS-2 makes more sense when guitar programming is a recurring part of your work and you want deeper editing, a larger library or expansion packs. Don't upgrade because the name sounds more professional. Upgrade when the missing control blocks a real arrangement.

Compatibility on current Macs

AAS lists the latest Strum Session 2 as natively compatible with Apple M-series Macs. Its current macOS Tahoe 26 compatibility page reports no issue with either the standalone application or the plug-in. Those statements apply to the latest AAS build, not to whatever installer is still sitting in an old downloads folder. On the evidence date, the support index listed version 2.4.5.

The current Session Bundle page includes a 64-bit Audio Unit, which is the format Logic needs. If an older project opens with a crossed-out instrument or a validation failure, update Strum Session first and test the project from a copy. Do not replace the instrument and overwrite the only working project file.

If Strum Session 2 does not appear or make sound

1. Check the format. Confirm that the AAS installer included the AU component. VST or AAX alone will not appear in Logic.
2. Restart the Mac. Apple recommends this early because Logic scans Audio Units during launch.
3. Open Logic Pro > Settings > Plug-in Manager. Filter by Applied Acoustics Systems and check the Compatibility column.
4. Use Reset & Rescan Selection. Rescan the selected instrument before using Full Audio Unit Reset, which forces a longer scan of every installed AU.
5. Check authorization. If Plug-in Manager says not authorized, finish AAS authorization and rescan.
6. Separate MIDI from audio. If the plug-in opens but stays silent, confirm that the track is selected, MIDI reaches the instrument, the played notes fall inside the active mode's range and the channel is not muted.

For a complete decision tree, use Logic Pro Plugins Not Showing Up. It covers component files, validation, quarantine and cache resets without turning the first troubleshooting step into a destructive cleanup.

Frequently asked questions

Is Strum Session 2 built into Logic Pro?

No. Strum Session 2 is a third-party AAS guitar instrument installed as an Audio Unit. Apple's built-in Session Players are separate Logic features.

Where is Strum Session 2 in Logic Pro?

Open a Software Instrument track's Instrument slot, then choose AU Instruments, Applied Acoustics Systems, Strum Session 2 and Stereo. If it is missing, check Logic's Plug-in Manager.

Does Strum Session 2 run natively on Apple silicon?

AAS says the latest Strum Session 2 has native support for Apple M-series Macs. Install the current AAS build rather than relying on an older archived installer.

Can Strum Session 2 follow Logic Pro's Chord Track?

There is no documented native automatic link between Strum Session 2 and Logic's Chord Track. Drive the plug-in with MIDI chord notes, Logic MIDI tools or recorded controller input and verify the resulting voicings.

What is the difference between Strum Session 2 and Strum GS-2?

Session 2 is the simplified instrument: it keeps the core modeled guitar and performance workflow but has fewer editing options, a smaller library and no support for AAS Strum expansion packs. GS-2 is the deeper Professional Series version.

Can I use Strum Session 2 without a MIDI keyboard?

Yes. Draw chord and trigger notes in Logic's Piano Roll or use Musical Typing. A hardware keyboard makes the two-hand Guitar mode easier to perform, but it is not required.

Strum Session 2 earns its place when you treat it as a performance instrument, not a guitar preset. Get the chord map right, make the picking hand audible in the MIDI and leave room for the part to breathe. For other instruments and effects that solve specific Logic jobs, continue with our best Logic Pro plugins guide or return to the Logic Pro tutorials hub.