he performed "ha-ha" at DREAM BOYS (the K8 vs. KT one) too. it was dirtier, like Hazuki said.
it's never been released on CD, it's just one of those songs that will only be performed live.
actually, the only Jin solo that has a CD release was "LOVEJUICE".
Kame has 3 solos on CD, while the rest has 2.