BTW, in the play-along mode in GB where you get pre-recorded accompaniment tracks, you can replace the drummer's kit with a drum machine and hang some filters o

BTW, in the play-along mode in GB where you get pre-recorded accompaniment tracks, you can replace the drummer's kit with a drum machine and hang some filters onto it. Much fun is to be had. However, this reminds me that filters probably make things much harder for the separation model, with the explosion of possible sounds from an instrument or voice. (Vishudha Kali's music is a nice illustration of that.)