4
votes
1answer
229 views

How can I find the length in seconds of a quarter-note (crotchet) if I have a tempo marking?

Given a tempo marking in bpm (beats-per-minute), how can I work out the length of a crotchet (quarter-note) beat?
6
votes
5answers
536 views

What do these numbers at the start of the music score mean

At the start of a guitar or drum score , there are always these 2 numbers which I don't understand What do the 2 numbers circled in red mean ??
6
votes
2answers
140 views

The Harmony of Clashing Tempos

The jazz guitarist John McLaughlin once published a book of scores for a number songs that he composed for his Mahavishnu Orchestra. There are some very unusual theoretical conundrums that come up ...