Best of '00s Adult Alternative

One of the ripple effects of the '90s alt-rock boom was the development of adult alternative. This genre featured songs that had an experimental edginess, independent roots, or the lingering feel of college rock—but without any hardcore negativity or aggression in sight. By its second decade, the sound was in full swing with artists like KT Tunstall, Gnarls Barkley, and Kings of Leon leading the pack.