Victor Coulsen Victor Coulsen Victor "Vic" Coulsen (dates unknown) was an American jazz trumpeter. Often referred to as Vic Coulsen, Vic Coulson, and even Vic Couslen, Coulsen was a member of the resident band at the Monroe's club, under Al Tinney's direction from as early as 1940. Coulsen has often been remembered has having had a seminal influence on the phrasing of early bebop by the likes of Thelonious Monk, Miles Davis, Dizzy Gillespie and several others - Charlie Parker among them. Parker remembers Coulsen (here spelled "Coulson") ""playing things I'd never heard before"", and states that the music he heard on
Tritone substitution Tritone substitution The tritone substitution is one of the most common chord substitutions found in jazz and was the precursor to more complex substitution patterns like Coltrane changes. Tritone substitutions are sometimes used in improvisation—often to create tension during a solo. Though examples of the tritone substitution, known in the classical world as an augmented sixth chord, can be found extensively in classical music since the Renaissance period, they were not heard until much later in jazz by musicians such as Dizzy Gillespie and Charlie Parker in the 1940s, as well as Duke Ellington, Art Tatum, Coleman Hawkins, Roy Eldridge