In a piece my brother is playing there's a weird time signature - it looks like a zero over a zero: a 0/0 time signature. It seems that the bars have 5/4 in them (probably not 10/8, but could be as far as I'm concerned). It is stated that the bars are played in tempo rubato.

Any idea what it is?

Adding a similar example...

enter image description here


1 Answer 1


0/0 time signature can be used to denote free time, with an irregular number of beats per bar. A large X as time signature is also sometimes used.

  • 5
    I have seen "senza misura" to indicate that also. Jul 4, 2017 at 9:31

Not the answer you're looking for? Browse other questions tagged or ask your own question.