sentences:  Captain Jack (Billy Joel song)
  
  "Captain Jack" is a song by Billy Joel featured on his 1973 album "Piano Man" with a live version on his 1981 album "Songs in the Attic".It is considered by some to be the most important and pivotal of his early compositions because his performance of the song at an April 15, 1972, live radio concert at Sigma Studios on WMMR in Philadelphia, and the subsequent airplay this live version received on the station, brought him to the attention of major record labels, including Columbia, with whom he would sign a recording contract in 1973.