Heart String

All tracks written by Earl Klugh except where noted.

1. "Heart String" – 6:23
2. "I'll See You Again" – 5:52
3. "Acoustic Lady, Part 1 & 2" – 7:43
4. "Spanish Night" – 3:18
5. "Pretty World" (Antonio Adolfo, Alan Bergman, Tiberio Gaspar)– 4:47
6. "Waiting for Cathy" – 2:50
7. "Rayna" – 5:15
8. "Heart String (Reprise)" – 4:03

Musicians

• Earl Klugh – acoustic guitar (1–5, 7, 8), steel string guitar (1, 4, 6), electric guitar (2), the "guitar choir" (4), acoustic nylon guitar (6), high-string nylon guitar (6)
• Greg Phillinganes – electric piano (1, 2, 7), clavinet (1), acoustic piano (4)
• Mickie Roquemore – clavinet (2, 3, 5), acoustic piano (3, 5)
• Darryl Dybka – electric piano (3, 5)
• Phil Upchurch – electric guitar (1–3)
• Charles Meeks – electric bass (1, 2, 4), bass (7)
• Hubie Crawford – bass (3), electric bass (3, 5)
• Roland Wilson – electric bass (5)
• Victor Lewis – drums (1, 2, 4, 7)
• Gene Dunlap – drums (3, 5)
• Ralph MacDonald – percussion (1, 2, 4, 5, 7)
• David Nadien – concertmaster (8)

Music arrangements

• Greg Phillinganes – rhythm arrangements (2, 4)
• David Matthews – string arrangements (2, 3, 7, 8), string conductor (8), orchestral arrangements and conductor
• Earl Klugh – rhythm arrangements (3–5, 7)
• Mickie Roquemore – rhythm arrangements (3)
• Darryl Dybka – rhythm arrangements (5)
• Gene Dunlap – rhythm arrangements (5)