A triplet is a group of three evenly spaced notes played within one beat. Eighth note triplets are indicated by three eighth notes grouped together by a bracket (or a curved line) and the numeral 3. The eighth note triplets are played with one third of a beat each. Triplets are easy to understand once you have heard them played. Listen to example 12 on the CD to hear the effect of triplets.
Triplets sound great when combined with the notes of the Blues scale as shown in the following example.