8-28 Band Practice, Full Mixes

11 songs exported from one Ableton Live 11 set on 2026-09-22. Song 17 skipped, exported separately.

Every file, checked against the set's own clip data

Song	Render start	Bars	Expected	Actual	WAV	Match
11	`113.1.1`	272.00	534.5 s	544.0 s	91.5 MB	tail +9.5 s
13	`513.1.1`	317.75	635.5 s	635.5 s	106.9 MB	exact
10	`865.1.1`	62.25	124.5 s	124.5 s	20.9 MB	exact
12	`961.1.1`	60.25	120.5 s	120.5 s	20.3 MB	exact
14	`1057.1.1`	82.25	164.5 s	164.5 s	27.7 MB	exact
15	`1185.1.1`	241.75	483.5 s	483.5 s	81.3 MB	exact
17	—	810.25	—	—	—	skipped
18	`2347.2.1`	161.00	322.0 s	322.0 s	54.2 MB	exact
19	`2546.3.1`	286.25	572.5 s	572.5 s	96.3 MB	exact
20	`2866.3.1`	98.25	196.5 s	196.5 s	33.1 MB	exact
21	`2994.3.1`	138.25	276.5 s	276.5 s	46.5 MB	exact
22	`3154.3.1`	137.75	275.5 s	275.5 s	46.3 MB	exact

10 of 11 match to the millisecond. Song 11 used the loop region already sitting in the session (113 to 385), which runs 9.5 s past its clips. Extra tail, nothing cut. Tempo 120 BPM 4/4, so 1 bar = 2.000 s. Durations read with afinfo, bar spans parsed from the .als.

How the region was set each time

Bar positions came from the set file, not from pixels. The .als is gzipped XML. Parsing AudioClip for CurrentStart and CurrentEnd gives every song's exact extent.
Every song has one clip spanning its whole length on the Kick track. Clicking that clip's title bar sets the time selection to its exact extent, and the Export dialog inherits it.
Read back before rendering. Render Start and Render Length were confirmed on screen for all 11 before Export was clicked, then the finished duration was checked against the bar count.
Exact extent instead of padding. A mis-aimed pad click can shorten a song, so each render used the clip's own boundaries.

Export settings, unchanged

Rendered Track Master. Include Return and Master Effects Off. Render as Loop Off. Convert to Mono Off. Normalize Off. Create Analysis File On. 44100 Hz, WAV 16-bit, No Dither, plus MP3 CBR 320. Only the filename changed between songs.

Where the files are

~/Projects/_outputs/band-practice-8-28-full-mixes/

788 MB total. Each song has a .wav, a .mp3 at 320, and Live's .asd analysis files. A README.md beside them repeats this table. The .als was not saved, only the window size and arrangement zoom changed, and no clip moved.