Springtime with the Decemberists

For their new album, “I’ll Be Your Girl,” released in March, the members of Portland-based rock band The Decemberists set out to challenge themselves. The group hit No. 1 on the Billboard 200 with its 2011 LP “The King Is Dead” and has built a following for creative sounds and lyrics. But fresh tactics, says frontman Colin Meloy, had to be taken to keep making invigorating music.