[member forum] Duet Songs

[yaoipinlover]

Hey guys,
Hmm, ok, let me get straight to the point.
We all know

• Jin and Ueda have a song together that is 'Butterfly'
• Jin and Pi sang 'Eternal' together at Pi's solo concert
• RyoJin made and sang 'Hey Girl' together at You and Jin Star Live

So i was wondering if there's any other duet performance among them especially Ryo and Ueda, Pi and Ueda, and Ryo and Pi, well maybe they sang together when they were juniors or in a show or concert or something.
I'm a relatively new fan for both KAT-TUN and NEWS (since 3-4 years back), and I'm not that familiar with their histories during their Junior time, so, please... tell me if you know anything about it ;p