Don’t miss the latest episode of the Sony Ericsson Raw Sessions, tonight at 23.40 on RTÉ2. The first semi-final takes R.S.A.G. and the Dirty Epics (pictured) to Grouse Lodge Studios where they once again must write and record an original song.

This time around the artists are helped by a special guest producer. Rarely Seen Above Ground teams up with Leo Pearson, a man who has worked with such luminaries as U2 and Elvis Costello. Not too shabby!

Meanwhile the Dirty Epics paired off with Ken McHugh, the multi-instrumentalist/producer behind Autamata. Ken takes a hands-on approach to get the best from the Dirty Epics.

Tune in tonight to catch all of the action.