Answer: A tempo is the answer
Explanation:
The word tempo is used to identify the actual speed of the music, or we could say the speed of the beat in music. A fast tempo means the beats follow one another quickly, while a slow tempo is just the opposite.
Ritardando (also abbreviated as ritard or rit. ) means a gradual slowing of tempo.
Accelerando (abbreviated accel. ) means to gradually quicken the tempo.
A tempo signifies a return to the original tempo. It's most often used after a ritard. or accel. to direct the musician to return to the former tempo.
