Well from the Montreal show he didn't seem to enjoy the new songs that much except HAND. He didn't give it all vocally or instrumentally, same with the Bounce songs and to some extent the Crush songs, though on those he was a bit livelyer.
He kicked ass on SIBSN and Raise Your Hands, that's about it.
I don't know why he is a bit absent, but maybe it's the act itself. I mean it's more a "Jon and the guys" tour than the previous ones, especially with the extra musicians and the all for Jon parts in the crowd. Jon&Richie didn't interact as much as they usually do either.
Ponrauil
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