[2][3] Jackson worked as a session musician, in the Billy Paul band, and with Philadelphia International Records.

Jackson said that the idea for adding more strings to the bass guitar came from his frustration with its limited range.

When asked what he thought of criticism of the six-string bass, Jackson replied, Why is four [strings] the standard and not six?

The only reason it had four was because Leo Fender was thinking in application terms of an upright bass, but he built it along guitar lines because that was his training.

[9] With Patti Austin With Alex Bugnon With Michel Camilo With Jorge Dalto With Mandoki Soulmates With Al Di Meola With Will Downing With Roberta Flack With Carlos Franzetti With Jun Fukamachi With Eric Gale With Terumasa Hino With Garland Jeffreys With Chaka Khan With Steve Khan With Tania Maria With Harvey Mason With Michel Petrucciani With Buddy Rich With Lee Ritenour With Mike Stern With Hiromi Uehara With Grover Washington Jr. With others