New releases this week include a single from the Scottish electronic band whose lead singer (Lauren Mayberry) is an award-winning journalist, a song that Dave Grohl performs on tour as a "cast solo", and another single from the new album Drones that lead singer Matt Bellamy recently described as their best saying, "the first six albums were some kind of long-winded foreplay to get to this point."

CHVRCHES, "Leave A Trace" (Glassnote)
Foo Fighters, "Outside" (RCA)
Muse, "Mercy" (Warner Bros.)