aria

noun
  1. A long, accompanied song for a solo voice, typically one in an opera or oratorio. noun
    The soprano's aria was the highlight of the opera.
    He practiced the aria for weeks to perfect his performance.
  2. A melody or tune, especially an elaborate one, that is part of a larger musical work. noun
    The composer included a beautiful aria in the second act of the symphony.
    Each character in the musical had their own distinct aria.