Best new songs: Hayley Williams, U.S. Girls, David Bowie...

Paramore's front-lady Hayley Williams has a solo debut album coming out in May, and she announced it with 'Simmer', a subtle exercise in how to draw the line between wrath and mercy; Scottish folk, Hindustani classical music and jazz make great companions on 'The North Carr' by James Yorkston, Suhail Yusuf Khan and Jon Thorne; U.S. Girls does some almost-religious rock at 'Overtime'; 'I Can’t Read 97' is an acoustic version of David Bowie's 1980s song by his short-lived hard-rock band Tin Machine; Porridge Radio reinvent the Pixies’ loud-quiet-loud trademark on 'Sweet'.