Great app! Lead sheet + very high quality playalong.
The last reviewer must have been confused by the titles of the songs in this app because these are undeniably the most important tunes for a jazz musician to know: Blues, Rhythm Changes, All the Things You Are, Autumn Leaves, Stella by Starlight and So What. They have been cleverly renamed, presumably to avoid copyright issues.
I use this app when I teach jazz piano - beginning and intermediate improvisers NEED to know these songs. They are staples of the jazz repertoire.
I love the mixer feature - an element of control you wont get from Aebersolds.
The Duderin about Erskine Jazz Essentials Vol. 1