Keynotes is a British game show that aired on ITV from 13 March 1989 to 18 December 1992 and hosted by Alistair Divall.
If neither contestant is able to select the correct word, the note goes in as a blank and two new players are brought up to play for two keynotes (and so on).
The team that the winning representative came from then has the opportunity to guess the main tune by listening to the already-revealed notes and following the rhythm of the bouncing ball.
If a team won five games in a row, they earned a £500 bonus and would immediately retire from the show.
If any of the questions representing the notes are not answered correctly within the time limit, they will not be revealed in the playing of the final tune.