At first I thought that was real guitars and thought "that's pretty autistic, but at least they are usable and presumably the collector knows how to play".
Whomp, Whomp. Nope, it's just controllers for a video game. That's both autistic and lame. Also, I had no idea there were that many different controllers for that game. I had Rock Band (with the drums and everything) for the 360 but never played it, or the 360, so I sold the whole mess to a dude with an eight year old who wanted it for family game nights. I hope they got lots of use out of it.
I used to like rhythm games, and might actually be impressed with a nice big collection of old rhythm game peripherals, but that collection's the equivalent of someone saying they have a gigantic movie collection, and then it turns out to be mostly comprised of those 50-movies-on-10-discs box sets from Walmart. The majority of those guitars are cheap third party ones that I never even gave a second glance to. There's nothing interesting about them culturally, mechanically, or visibly.
The sole other guitar in that entire photo that has anything to actually say about it is this one:
Notice how it has a ton of buttons? It's the Rock Band 3 Pro Guitar, modeled after a Fender Mustang, which intended to teach players how to play actual guitar. In-game, the pro guitar implementation was abysmal and wouldn't teach anyone anything, but the actual guitar itself is interesting in that it has a MIDI jack. So, you can hook it up to your computer and use it as a real guitar. An awkward real guitar, but it's technically a real instrument, and a somewhat rare one:
That's a bona fide digital guitar, also with a ton buttons, and you press them down and strum and play it like a real one. The Rock Band one is a relatively inexpensive digital guitar, so if that kinda thing interests you, it's a nice place to start. It's no replacement for even a cheap 6-string, but it's at least a real instrument. There was also a 25-key keyboard that also had a MIDI jack, but I don't see one of those in his pile.
(sadly, none of the RB drums have a MIDI jack)
