Standing on the shoulders of giants such as Bartok or Berio, I recently finished writing an ensemble piece titled Bastard Tunes. The piece was composed with the help of a machine learning system trained on transcriptions of Celtic music. The system produces short melodies that share many characteristics with the style it learned. But, with the possible exception of the fourth Bastard Tune, my piece applies more freedom in the way the system's output is used as compositional material. The piece will be premiered in a concert with other examples of music composed by and with computers.