Could you help me find this song and band please?

I really really like old music but none of my freinds do so I can't find out about it. I saw this on telly ages ago and have been trying forever to find it. It's like a really really handsome man with long hair and he sings

Ah ah ah. Ah ah ah.

then something like Wait for Rick Oshay, and think it has something about child in it too. Thank you.

Could you help me find this song and band please?

The song is 'Child In Time' by Deep Purple.

The lyrics you are referring to are "Wait for the richochet" and "Sweet child in time".