Part of the ABRSM Grade 2 piano exam involves the examiner playing a piece, with the student required to start clapping along when they sense the rhythm, and to then identify whether or not the piece was in 'double or triple time'.
I have my exam next week, and just encountered a bit of a curveball regarding this. My teacher did some aural exercises with me. She played a piece, which I said was in triple time. She told me I was wrong, and that it was double time. However, the time signature was 6/8. I had been clapping along correctly to the rhythm.
Now, my understanding has always been -
double time = number of beats in a bar is a multiple of 2 triple time = number of beats in a bar is a multiple of 3
If a piece in 6/8 is actually 'double' time, then I have no idea what this term actually means!