J. Blackfoot (born John Colbert, 20 November 1946 – 30 November 2011) was a singer from Greenville, Mississippi, USA who had a hit single called "Taxi", released on the Allegiance record label. It entered the UK Singles Chart on 17 March 1984. It remained in the charts for 4 weeks, reaching position 48. It also hit number 90 on the U.S. pop chart and number 4 on the U.S. soul/R&B chart. John Colbert acquired the nickname of J.