Tiny Desk Concerts

NPR's Tiny Desk Concerts feature renowned musicians from around the world, performing live, usually next to the desk of Bob Boilen, host of All Songs Considered.

I particularly enjoyed the 21 December broadcast (around 17 minutes long), which featured the Australian Chamber Orchestra (not all of them)

Ravel: String Quartet (1st movement)
Ravel (arr: Tognetti): Kaddisch
Tawadros: Oasis


Tawadros' Oasis is worth checking out.

You can also subscribe to the regular podcast via iTunes.