David Sanborn continues his stint at the Jazz Alley again tonight.PWRFL Power will be at the Comet this evening at 8 p.m., playing his quirky acoustic fingerpicking songs with Grey Anne and People Eating People for $6.Songstress Molly Rose celebrates her CD release party at the Tractor Tavern tonight, but you should also go to see the Nick Jaina Band (pictured). Another excellent folk band from Portland, Pickwick, opens. That’s at the Tractor Tavern, it starts at 9 p.m. and costs a trifling $6. Here’s a little background on Nick Jaina:Unlike Nick Jaina’s first release of 2008, Wool (which was recorded in parts, then assembled later), his new effort, A Narrow Way, sounds more fully-realized. Maybe it’s because it was recorded analog in the same studio with the same crew. Whatever the reason, Jaina seems to have finally realized all the potential of his 2006 Seven Stations. A Narrow Way is a rich, sunny album, and it comes as a welcome contrast to Wool’s dark, stripped-down songs, which are beautiful in the same way that ghost towns and deserts are beautiful: They are sparse, bleak, and thick with absence. But human beings can only endure so much melancholy. Like winter’s chill, Wool’s mournful tone eventually grows oppressive. And if Wool is Jaina’s winter album, then A Narrow Way, with its bright horns, cheerfully plucked strings and lively pace, is the first warm day of spring. SB