Jones and Richards spent day after day playing guitar while listening to blues records (notably Jimmy Reed, Muddy Waters, Willie Dixon and Howlin' Wolf). During this time, Jones also taught Jagger how to play harmonica.
The four Rollin' Stones went searching for a bassist and drummer, finally settling on Bill Wyman on bass because he had a spare VOX AC30 guitar amplifier and always had cigarettes, as well as a bass guitar that he had built himself. After playing with Mick Avory, Tony Chapman and Carlo Little, in January 1963 they finally persuaded jazz-influenced Charlie Watts to join them. At the time, Watts was considered by fellow musicians to be one of the better drummers in London; he had played with (among others) Alexis Korner's group Blues Incorporated.
Watts described Jones' role in these early days: "Brian was very instrumental in pushing the band at the beginning. Keith and I would look at him and say he was barmy. It was a crusade to him to get us on the stage in a club and be paid half-a-crown and to be billed as an R&B band".
While acting as the band's business manager, Jones received £5 more than the other members (equivalent to £103 in 2018), which did not sit well with the rest of the band and created resentment. Keith Richards has said that both he and Jagger were surprised to learn that Jones considered himself the leader and was receiving the extra £5, especially as other people, like Giorgio Gomelsky, appeared to be doing the booking.
Jones was a talented multi-instrumentalist, seemingly at home on any musical instrument. For many Rolling Stones tracks prior to 1969, for any instrument except the standard rock instrumentation of drums, guitars, piano, or bass, Jones would be the one playing it.