I have most of the material in this box as well, the set would definitely be worth buying if you don't have any material from his first few sessions (especially what's included in the Mosaic set) and to hear remastered versions of the Back At the Chicken Shack/Midnight Special stuff. the tracklist
DISC 1:
1. You Get'Cha
2. Preacher, The
3. Champ, The
4. Bayou
5. Judo Mambo
6. Willow Weep For Me
7. Fiddlin' the Minors
8. Well, You Needn't
9. Get Happy
10. Groovy Date
DISC 2:
1. Yardbird Suite
2. Summertime
3. All Day Long
4. Duel, The
5. I Can't Get Started
6. Body and Soul
7. Slightly Monkish
8. Blues After All
9. 'Round Midnight
DISC 3:
1. Sermon, The
2. Flamingo
3. Hackensack
4. I Got a Woman
5. See See Rider
6. When Johnny Comes Marching Home
7. Sista Rebecca
8. Old Folks
DISC 4:
1. Back at the Chicken Shack
2. Minor Chant
3. Midnight Special
4. Jumpin' Blues, The
5. Squeeze Me
6. Ain't No Use
7. Pork Chop
8. Can Heat
9. Come Rain or Shine
10. Prayer Meetin'
11. Fungii Mama