Chris Willman Music WriterFive of the artists that are up for best new artist at next Sunday’s Grammy Awards are reimagining their original material as well as covering other artists’ songs, at Spotify’s behest — with Phoebe Bridgers and Chika debuting two new recordings to kick off the series today.Others taking part in the Spotify Singles rollout in the coming days, doing a pair of songs apiece: hip-hop upstart D Smoke on Wednesday, pop breakout Noah Cyrus on Thursday and country chart-topper