Blues Standards
Here's the School of the Blues standards list that each of the student house bands learn. The first 9 songs represent the common grooves in the blues (as well as song 12 for a swing). Songs 10 and 11 are common 8 bar blues progressions and songs 13 through 20 are famous songs that have specific elements that need to be learned to be played well. There are various elements in these songs (breaks for example and errors in timing/form) that also help a new blues band learn their trade. You can see this list at https://www.facebook.com/bluesharmonica