5/4 time means that there are five quarter beats
in a bar
. This is not a regular time signature
, and is usually more taxing on the ear than more usual time signatures (such as 4/4, 3/4 and 6/8).
The most famous example of a song in 5/4 time is Take Five
by Paul Desmond
, taken from the Time Out
album by The Dave Brubeck Quartet