"Blue on Black" is a song by American blues rock band Kenny Wayne Shepherd Band. Written by Shepherd with songwriters Mark Selby (musician) and Tia Sillers, Noah Hunt provides the lead vocal. It is a single from their second studio album, Trouble Is..... Released on April 7, 1998, the track spent 42 weeks on the US Billboard Hot Mainstream Rock Tracks chart and rose to number one, remaining there for six non-consecutive weeks.

"Blue on Black" was regarded as the best rock song of 1998 by various media, including winning the Billboard Music Award for Rock Track of the Year and the song's popularity helped make Trouble Is... the 1999 Blues Album of the Year in Billboard. The song continues to be a top download of the Kenny Wayne Shepherd catalog, ranking at number one on Rhapsody.

"Blue on Black" features a simple acoustic guitar chord progression and ghostly lyrics with a faint echo. Its chorus incorporates a vocal harmony and simple yet bold lyrical hook. An electric guitar solo aids the song's rock edge. The subject matter deals with heartbreak and regret, as the narrator has just been through a tough break up. He laments that the loved one is gone but decides he cannot change the past. The lyrics incorporate comparative phrasing such as "Joker on jack/match on a fire/cold on ice/a dead man's touch." to emphasize inadequacy and regret.

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