Man, finally got my Platinum yesterday! I spent all morning on it. I think the hardest one I did was Galaxanoids or something like that. I think I must have done that one a hundred times. Drove me batty, and I didn't think it was possible to do. There were so many times where I was down to the last note, and then ran out of time JUST as my guy was about to touch it. In one, I was literally on top of it, but it didn't register it fast enough, and I lost. I wanted to toss my Vita across the room.
I'll probably try my hand at creating a level, but creating music is hard! I'm a 2D traditional artist, not one of the musical variety, so I don't even know where I would start to building my song for the level.
I've only played one community level, because I couldn't connect to the Sound Shapes servers for some reason yesterday, but the one I did play a few days ago was neat. I'll probably give more a try later. Fantastic game, and I would be all over some DLC that gave us more levels and Beat School challenges. I'm done with Death Mode. So glad I never have to touch it again. Lol.
EDIT: Yeah, I've been playing the game solely with my Vita and headphones, and it's been amazing. I haven't even fired it up on the PS3.