I always thought it should have been much, much bigger than it was.
Now, I am going to assume from what you've written that you know the "Legacy" CD release of Dennis' solo album "Pacific Ocean Blue" contained the salvageable tracks from his never-released second album, "Bambu."
If not, here 'tis...but for everyone else, "Pacific Ocean Blue" made a MASSIVE impression on critics, because it was much stronger than the actual Beach Boys material being released at the same time. The Beach Boys even included "River Song" on "Ten Years Of Harmony," a double-vinyl release that's now sold as a single CD. To my knowledge, it remains the ONLY time a Beach Boys solo track made it onto a Beach Boys compilation album.
The details:
Pacific Ocean Blue & Bambu - 2 CD Deluxe Legacy Edition
http://www.amazon.com/Pacific-Ocean-Blue-Bambu-Deluxe/dp/B001AMTY54/1. River Song 3:46
2. What's Wrong 2:25
3. Moonshine 2:29
4. Friday Night 3:13
5. Dreamer 4:24
6. Thoughts Of You 3:05
7. Time 3:35
8. You And I 3:26
9. Pacific Ocean Blues 2:39
10. Farewell My Friend 2:27
11. Rainbows 2:49
12. End Of The Show 2:59
13. Tug Of Love (Previously Unreleased) 3:50
14. Only With You (Previously Unreleased) 3:59
15. Holy Man (Instrumental, Previously Unreleased) 4:27
16. Mexico (Previously Unreleased) 5:35
17. Under The Moonlight (Previously Unreleased) 3:57
18. It's Not Too Late (Previously Unreleased) 4:34
19. School Girl (Previously Unreleased) 2:31 $0.99
20. Love Remember Me (Previously Unreleased) 4:05
21. Love Surrounds Me (Previously Unreleased) 3:42
22. Wild Situation (Previously Unreleased) 2:42
23. Common (Previously Unreleased) 3:35
24. Are You Real (Previously Unreleased) 3:38
25. He's A Bum (Previously Unreleased) 2:50
26. Cocktails (Previously Unreleased) 3:02
27. I Love You (Previously Unreleased) 2:03
28. Constant Companion (Previously Unreleased) 3:22
29. Time For Bed (Previously Unreleased) 3:08
30. Album Tag Song (Previously Unreleased) 3:46
31. All Alone (Previously Unreleased) 3:44
32. Piano Variations On Thoughts Of You (Previously Unreleased) 3:03
33. Holy Man (Taylor Hawkins Version)