Interesting question about drumming on the solo thing and an even more interesting response... REALLY would like to know the tone of the answer for that one question in particular.
Teppei did organs on Please Come Home as far as I know, and he's the only Thrice who did anything else on it besides Dustin. it says it in the liner notes of the album, which I own.
speaking of Please Come Home... what a terrific album, and I would love to hear from that side of Dustin any day!
oh and I thought it was really cool how he actually mentioned not being down with the initial idea of bringing Invisible Children on the tour, because he wanted the emphasis on the music. that's a great honest answer.
Sorry, I've been out of the loop today, and I've noticed that multiple people have asked about the tone of the quote where Riley responds to drumming on Dustin's solo album. Riley was definitely direct about it, but he also was far from sarcastic/cynical, it was more of a light-hearted tone. No worries!