According to a post on coldplay.com, Ash frontman Tim Wheeler recently spent an afternoon in the studio with Coldplay, who are currently working on the follow-up to 2008’s ‘Viva La Vida’. It’s unclear what exactly Tim’s role is at this stage but the post mentions Tim playing guitar. Tim previously played guitar on Coldplay’s track ‘1:36’. An excerpt from the post reads as follows:
They’re also joined for an afternoon by Mr Tim Wheeler from Ash. He straps on a guitar and jumps into the day’s tune. The raised antennae pretty quickly catch a signal. He’s fiddling around at the top of the neck, looking for melodies, just throwing out streams of notes. Chris starts to call over the mic "What was that?". He sings a tiny snippet of something that Tim played only once - almost as something to just get his fingers moving. It’s such a tiny cluster of notes that for a while it’s unclear where they should fall in the chord sequence until finally they drop into place and twinkle like they’ve been there all along, just waiting to be discovered.