Jackson spoke a bit about Rob in an interview with the NY Post. I’m only posting the part where he mentions Rob. You can read the entire article here.
From the NY Post:
PW: Seems like music is a common theme on your sets — the “Twilight“ cast is all pretty musical as well, right?
Jackson: Oh yeah, we have a lot of musicians in the cast – it’s fun, we’d have Cullen Family Jam Band Sessions in the hotel. Sit around, play harmonica and work on some songs. We’d help Rob [Pattinson] out with songs he was working on, they’d help with songs I was working on, Nikki [Reed] and I would write song together and Kristen [Stewart] would play a bit too.
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