What does 'tempo rubato' allow a performer to do?

'Tempo rubato' allows a performer to stretch or compress beats for expressive purposes. This technique involves slight variations in tempo, where the performer can take liberties with the timing of notes to convey emotion and enhance the musical phrase. By temporarily altering the pace, musicians can emphasize particular notes or create a more nuanced interpretation of the piece. It is not about maintaining a consistent speed, which would contradict the very essence of rubato. Instead, it provides an opportunity for expressive flexibility, making the performance more dynamic and personal. While it’s not limited to fast passages, as suggested by another option, and does not focus solely on rhythm at the expense of melody and harmony, the use of rubato in performance supports a richer emotional experience in music.