Lately, I've found a couple (two, to be exact) videos of other JE singers singing Arashi songs. Like the title says.
First is
Ueda singing Kotoba Yori Taisetsuna Mono. I dunno...it just sounds sort of like he's forcing himself to sing harder. It's good, really it is, but it's a bit strained. But he's really into it, which is good.
Next is
Shoon singing Ohno's solo Top Secret.. I don't really think it's that good of a song choice for Shoon to sing. I like Shoon, but the song is more suited for Ohno's voice (because it's Ohno's solo). Shoon's voice is higher, and for whatever reason, I think he'd be better at singing one of Aiba's solos. (Just as a side note, I really don't like Top Secret, regardless of who's singing it. It's sort of a bleh song. Rain was a LOT better.)