"She Caught the Katy" is a blues standard written by Taj Mahal

Taj Mahal (musician)

Henry Saint Clair Fredericks , who uses the stage name Taj Mahal, is an American Grammy Award winning blues musician. He incorporates elements of world music into his music...

 and James Rachell

Yank Rachell

James "Yank" Rachell was an American country blues musician, dubbed an "elder statesman of the blues."-Career:...

. The song was first recorded for Taj Mahal's 1968 album The Natch'l Blues, and is one of Mahal's most famous tunes. It has since been covered many times, and is included on the soundtrack for the 1980 movie The Blues Brothers

The Blues Brothers (film)

The Blues Brothers is a 1980 musical comedy film directed by John Landis and starring John Belushi and Dan Aykroyd as "Joliet" Jake and Elwood Blues, characters developed from a musical sketch on the NBC variety series Saturday Night Live. It features musical numbers by R&B and soul singers James...

(the song greets Jake Blues as he leaves prison, in the beginning of the movie). According to John Belushi

John Belushi

John Adam Belushi was an American comedian, actor, and musician, best known as one of the original cast members of the NBC sketch comedy show Saturday Night Live, The Star of the Films National Lampoon's Animal House and the The Blues Brothers and for fronting the American blues and soul...

's widow, it was Belushi's favorite blues song.

The "Katy" refers to the Missouri–Kansas–Texas Railroad.

Covers by notable artists

• James Belushi
  James Belushi
  James Adam "Jim" Belushi is an American actor, comedian, and musician. He is the younger brother of comic actor John Belushi.-Early life:Belushi was born in Chicago...
  
  , live
• John Belushi
  John Belushi
  John Adam Belushi was an American comedian, actor, and musician, best known as one of the original cast members of the NBC sketch comedy show Saturday Night Live, The Star of the Films National Lampoon's Animal House and the The Blues Brothers and for fronting the American blues and soul...
  
  , The Blues Brothers
  The Blues Brothers (film)
  The Blues Brothers is a 1980 musical comedy film directed by John Landis and starring John Belushi and Dan Aykroyd as "Joliet" Jake and Elwood Blues, characters developed from a musical sketch on the NBC variety series Saturday Night Live. It features musical numbers by R&B and soul singers James...
  
  
• Albert King
  Albert King
  Albert King was an American blues guitarist and singer, and a major influence in the world of blues guitar playing.-Career:...
  
  , on the 1971 album Lovejoy
  Lovejoy (album)
  -Track listing:#"Honky Tonk Woman" – 3:59#"Bay Area Blues" – 2:55#"Corrina, Corrina" – 3:45#"She Caught the Katy " – 3:56...
  
  
• Paul Pena
  Paul Pena
  Paul Pena was an American singer, songwriter and guitarist of Cape Verdean descent.His music from the first half of his career touched on Delta blues, jazz, morna, flamenco, folk and rock and roll...
  
  , live
• Phish
  Phish
  Phish is an American rock band noted for its musical improvisation, extended jams, and exploration of music across genres. Formed at the University of Vermont in 1983 , the band's four members – Trey Anastasio , Mike Gordon , Jon Fishman , and Page McConnell Phish is an American rock band...
  
  , live
• Bonnie Raitt
  Bonnie Raitt
  Bonnie Lynn Raitt is an American blues singer-songwriter and a renowned slide guitar player. During the 1970s, Raitt released a series of acclaimed roots-influenced albums which incorporated elements of blues, rock, folk and country, but she is perhaps best known for her more commercially...
  
   (with Taj Mahal), live
• James Taylor
  James Taylor
  James Vernon Taylor is an American singer-songwriter and guitarist. A five-time Grammy Award winner, Taylor was inducted into the Rock & Roll Hall of Fame in 2000....
  
  , live
• Widespread Panic
  Widespread Panic
  Widespread Panic is an American rock band from Athens, Georgia. The current lineup includes guitarist/singer John Bell, bassist Dave Schools, drummer Todd Nance, percussionist Domingo "Sunny" Ortiz, keyboardist John "JoJo" Hermann, and guitarist Jimmy Herring...
  
  , live