I found out how to make unique npcs play music without bardfaction, bardscript or bardquest. Simply using a scene and - tata! - a stereo soundfile in dialogue! Without crashing. I thought, Skyrim could in dialogue only use monofiles. Nope. Simply create a new Sound Output Model (SOM) and use two channels as input. Overwrite in the dialogue the Audio Output with your SOM and that's it. Soundfile must be in xwm because wav format is too big and if you simply fuz it, you get too much quality loss. Here's the result:
Music written and performed by me. Ähm, haven't played guitar and Bouzouki since ten years.
Edited by Tasheni, 12 January 2018 - 05:56 PM.