Last Thursday, a benefit concert was held by Haim at Los Angeles' Troubadour to celebrate their late friend Sammi Kane Kraft. The girls invited several musicians to join them on stage, including Grizzly Bear's Ed Droste, Vampire Weekend's Rostam Batmangli, and Jenny Lewis, who decided to debut a new song called 'Girl On Girl'.

You can watch a video of the performance below, as well as a cover of Beach Boys' 'Surfer Girl' by Ed Droste and Haim.