Time signature
The time signature of a piece of music indicates how many beats are in each bar. A time signature allows a musician to count a steady beat while playing a piece.
The time signature is written at the beginning of the staffA set of five horizontal lines with four spaces between. Each is used to represent a different pitch in written music. Also called a stave. It comes after the clefA symbol placed at the start of a staff which indicates the pitch of the musical notes that follow and key signatures.
You may find certain pieces of music have include changes to different time signatures. This will be marked on the sheet music, so always check through a piece of music to ensure you are aware of any changes of time signature it might have.
Metronome mark
A composer may include a metronomeA device which can be set to tick or beep at a particular rate to help musicians play to a particular tempo mark to indicate the tempoThe speed or pace of performance in speech, dance or music. - how fast or slow the music should be played.
For example, the metronome mark above tells you there are 80 crotchet beats per minute.
Below are three examples of the same song being played at three different tempos.
You can use a traditional metronome to give you a tempo to follow. You can also download metronome apps to your smartphone.