"I Guess That's Why They Call It the Blues" is a song by English musician Elton John, with music co-written by Elton John and Davey Johnstone, and lyrics by Bernie Taupin. It was released as the first single from Elton John's 17th studio album "Too Low for Zero" in 1983. The song featured the classic Elton John Band lineup and became one of his biggest hits in the 1980s, reaching No. 4 on the Billboard Hot 100 and No. 5 in the UK charts. The track is known for its nostalgic '50s-style R&B shuffle, jazzy piano, and a memorable harmonica solo played by Stevie Wonder. Its heartfelt lyrics were a love letter by Bernie Taupin to his then-wife, Toni Russo, making the song deeply personal and emotional. The music video portrays a young couple separated during the 1950s due to National Service, emphasizing themes of love and longing.