After hearing music for the first time, a superior race, the Qomar, become enthralled by the Doctor's singing voice. The success goes to his head and he resigns his commission and prepares to leave the ship to embrace his rock-star status.

Kamala Lopez-Dawson (Tincoo)
Ray Xifo (Abarca)
Paul Williams (Prelate Koru)
Marie Caldare (Azen)
Nina Magnesson (Vinka)

• The Qomar have never heard any type of music before. They prefer the Doctor's singing to the "Harry Kim and the Kimtones" jazz quartet.
  
• The Doctor asks Lt. Torres to delete his medical subroutines to expand his musical subroutines so he can stay in the favor of the Qomar. When the Doctor realizes the Qomar don't really appreciate him any more than a musical instrument, he returns to Voyager.
  
• The Doctor inspires Tincoo to create a superior holomatrix that sings with a perfect mathematical and technical performance.