A score may carry tracks instead of voices — a list of sibling .mbscore files with cached title, section, members, bpm and length. Opening one in Menu Band shows the list (ScoreTrackList.swift); double-click, Return or Play performs the track as opening its file would, Stop halts it. QuickLook previews the list and the thumbnail is the album sleeve. trio.mjs lists a collection, conducts one track with --track N, or all of them with --setlist. scores/macneopolitan.mbscore holds all 34 Trio scores in five sections, written by bin/collection.mjs from the lane's setlist, songbook and dialogs.