California alternative rock band the Neighbourhood, often referred to simply as the NBHD, has been quite active since its formation in 2011. The band only has two albums — 2013 breakthrough I Love You and its follow-up, Wiped Out! — but the quintet has put out a bevy of EPs, singles and mixtapes. It’s a style that allows the NBHD to work when inspiration strikes and quickly get music to its fan base. The band traffics in dark, moody and even sinister arrangements. Lately, lushly orchestrated string effects and elements of R&B have crept into the NBHDs’ music, suggesting it is heading in a new direction. Expect a theatrical show at House of Blues on Friday.