A triplet is a group of three evenly spaced notes played within
1 beat. Eighth note triplets are indicated by three eighth notes
which are sometimes grouped together by a bracket or a
curved line and have the number 3 written either above or
below the group. The eighth note triplets are played with a third
of a beat for each eighth note. Triplets are easy to understand
once you have heard them played. Listen to the recording.
Here are some 7th chords played with a triplet rhythm.
Triplets sound great when combined with the notes of the Blues scale. Listen to the following example and then make up some of your own triplet based riffs from the Blues scale.