#ostinato  a musical phrase repeated over and over during a composition
  supertype:  musical_phrase__musicalphrase__phrase  a short musical passage two to four measures long
  subtype:  ground_bass  a short melody in the bass that is constantly repeated
  subtype:  riff  a jazz ostinato; usually provides a background for a solo improvisation

No statement uses or specializes ostinato; click here to add one.