The 1957 Sessions: April
| Track | Durée | Titre | Tablature |
| 1 | 03:35 | Beauregard | |
| 2 | 09:11 | O'Blues | |
| 3 | 11:15 | Happyology | |
| 4 | 07:54 | Midday | |
| 5 | 07:05 | Polarity | |
| 6 | 07:08 | Ameena | |
| 7 | 05:53 | Space | |
| 8 | 08:06 | Metaphor | |
| 9 | 10:36 | Morning | |
| 10 | 04:10 | The Beginning | |
| 11 | 10:15 | G. Bouk | |
| 12 | 07:05 | Blues in Space | |
| 13 | 08:34 | Yusef's Mood |