21. Haim "Forever"
Label: National Anthem
Three Los Angeles sisters, all 22 or younger, make up the R&B-influenced rock band that burst onto the scene this year. So far, the title track from their three-song EP is the young group's best and most known, and rightfully so. The record has hints of disco and Madonna/Michael Jackson-era pop sensibilities, but Haim's unique brand of '90s baby assertiveness saves "Forever" from being drowned by its inspirations.