It is possible to create a personal audition in user Performance and then in library ?
In Bosendorfen and Chick's Mark V libraries , every Performances has its original audition 🙂
I'm not aware of any user access to affect what the audition button does.
The basic building blocks are there - a recorder to record your own audition. However, the settings to assign a recording (or loaded MIDI file) to an audition are not there.
Current Yamaha Synthesizers: Montage Classic 7, Motif XF6, S90XS, MO6, EX5R
I hope in next firmware update 🙂
The closest user accessible feature to do this sort of thing is "Song&Perf".
https://www.yamahasynth.com/forum/store-song-perf-settings
Current Yamaha Synthesizers: Montage Classic 7, Motif XF6, S90XS, MO6, EX5R