For this week's BROW let's have a listen to part of The Beatles warm up session from January 31, 1969, just before laying down the necessary takes of "Two Of Us" for the Let It Be film and album. While in a skiffle mood, the band breaks into a medley of songs from the past by Lonnie Donegan, Carl Perkins and even Johnny Cash, to name a few. Check it all out, right here.