Nightingale offers karaoke functionality by isolating vocals from instrumentals using the UVR Karaoke model or Demucs, with adjustable guide vocal volume. It features word-level lyrics transcribed and aligned by WhisperX, real-time pitch scoring with star ratings, and multiple player profiles for tracking individual score histories.

Holly Herndon has developed an AI voice clone that allows users to create music using her custom models. Her journey into machine learning began in 2015, evolving from initial "scratchy" outputs to sophisticated tools for musical expression.