In 2006, Keith Slettedahl appeared in an episode of "How I Met Your Mother" that originally aired on which date ?
Keith Slettedahl Keith Konrad Slettedahl (born August 9, 1973) is an American musician. He is the singer and songwriter for Los Angeles pop rock group The 88. In 2006, he appeared in the episode "Best Prom Ever" on the sitcom "How I Met Your Mother", playing a gig with his band on a High School-Prom.
How I Met Your Mother (season 6) The sixth season of the American television comedy series "How I Met Your Mother" premiered on September 20, 2010, and concluded on May 16, 2011 on CBS.