Alternative - album - was created in 1986.

Adult - album - was created in 2005.

"In Rainbows," by Radiohead, won Best Alternative Music Album at the 51st Grammy Awards.

Neil Young has won 7 Juno awards throughout his career. They include: Album of the Year, Male Vocalist of the Year, Best Male Artist, Producer of the Year, Adult Alternative Album of the Year (twice), and Artist of the Year.

This Providence is a rock/alternative band, but their newest album is labeled alternative. So the song Letdown is alternative. :)

Source: I love This Providence