I have a pack from Gmod.org from the Gmod 9 days, it’s got some really low quality ones, yet a surprisngly quality Keyboard. I have a mixed bag of quite a lot of Guitar Hero Models too, stuff like Bass, Guitar, Drums and a few microphones. And terrible ragdolls, some stage bits and missing texture soda cans. I’ll go bundle those up if you want. They are mostly pretty bad, but Gmod never properly got good instrument models made with it in mind. Some of the Bass is fine, though.
Alright it was really small, so the first pack I mentioned is here: https://www.dropbox.com/s/u4zl4ylfpzjqzjp/gmod10instrumentpack.rar?dl=0
EDIT: Someone mirrored all the GH stuff.
I might also have tried to do a Gmod port of the SFM instruments mentioned, not the trumpets, as I just now learned they exist. If someone can upload a non Workshop mirror, I can do a quick port on em, too. I just dunno if I got the instruments working or not. I’ll check up on that now actually. EDIT: I must have deleted these or just planned on it but never got to it.
http://steamcommunity.com/sharedfiles/filedetails/?id=144755381 And while I go do all that, here’s the single best bass model in Source, or at least one of em. I think the SFM ones have bones for the strings, so it might be better, but damn this is still one fine bass. The uploader has plenty of other instrument packs on workshop too, just gotta wade through some awful pony shit to get to it.