Short for Super Junior-Happy.
Subgroup of Super Junior featuring Leetuek, Yesung, Shindong, Sungmin, Kangin, and Eunhyuk.
They sing, get this, happy songs.
This song, Pajama Party, is deceptively happy. My favourite part is that the members look so innocent and cute...plus there's a gorilla.
My not favourite part is that the lyrics can be changed to have a dirty meaning realllly easily.