Swing – A rhythm style where a single straight beat is relaxed into a more triplet feel
To remember what swing is use the following mnemonic:
On the swing (swing) the triplets feel full of joy.
Swing is often called a triplet beat but in fact the first three beats are altered so that the first beat stays the same and the second beat is played immediately before the 3rd beat. The joining of every other beat is continued in this way to create a kind of galloping sound as follows: