Stjepan Hauser has been playing cello since he was a boy, mastering the instrument's classical repertoire while studying in Croatia, … ...

The cellists have been touring with John for over a year now. 2Cellos also became the first instrumental group to fill the guest spot on "Glee" (the Michael Jackson tribute episode).

Now Stjepan Hauser and Luka Sulic, who perform as 2Cellos, have reprised the concept of their "Smooth Criminal" video—the dueling players faced off in a ballroom—on the high-school musical TV ...