Boston's spookiest indie-rockers, Sinnet, are celebrating the culmination of years of hard work in their new LP, Gentle Humor.  The band, led by Aaron Spransy (The Fatal Flaw) creates a smooth, soulful vibe that immediately infects the listener.  At times moody and ambient, Sinnet are becoming the masters of off-kilter indie pop.  Check them out at The Lilypad in Cambridge on May 5 for their record release, featuring The Silver Mirrors and American Echoes or hit up their website for Spring tour dates in a city near you.  You can also pick up Gentle Humor on 5/8 when the album drops. -Brian Varneke