How Long Has This Been Going On? Lyrics
| Song | How Long Has This Been Going On? |
| Artist | Zoot Sims |
| Artist | Bob Brookmeyer |
| Album | Tonite's Music Today |
YouTube Results (More on YouTube)
| Song | How Long Has This Been Going On? |
| Artist | Zoot Sims |
| Artist | Bob Brookmeyer |
| Album | Tonite's Music Today |