Lennie Tristano Tadd Dameron Crosscurents LP two sets. UK Import
Side A is Tristano set with Wayne Marsh, Lee Konitz Recorded in NYC, March 4, 1949 , March 14, 1949 , and May 16, 1949 

Side B Dameron Set with Fats Navarro Miles Davis Dexter Gordon Kenny Clarke and others
Recorded in New York City, January 18, 1949 , and April 21, 1949 

Crosscurrents is an album by jazz pianist Lennie Tristano. The sides were recorded in 1949 and the album released by Capitol in 1972. The album was inducted into the Grammy Hall of Fame in 2013
The first seven tracks are recordings of Tristano's sextet, containing Warne Marsh(tenor sax), Lee Konitz (alto sax), Billy Bauer (guitar), Arnold Fishkin (bass), and Harold Granowsky or Denzil Best (drums; separately). They include "the earliest examples of free improvisation in jazz: 'Intuition' and 'Digression'". 

Tadd Dameron B side

Tadd Dameron and his Orchestra : Fats Navarro, tp; Kai Winding, tb; Sahib Shibab, as; Dexter Gordon, ts; Cecil Payne, bs; Tadd Dameron, p; Curley Russell, b; Kenny Clarke, d; Diego Ibarra, bgo; Vidal Bolado, cga; Rae Pearl, voc    New York, January 18, 1949. April 21, 1949 with Miles Davis

Tadley Ewing Dameron (February 21, 1917 – March 8, 1965) was an American jazz composer, arranger, & pianist

Born in Cleveland, Ohio, Dameron was the most influential arranger of the bebop era, but also wrote charts for swing and hard bopplayers. The bands he arranged for included those of Count Basie, Artie Shaw, Jimmie Lunceford, Dizzy Gillespie, Billy Eckstine, and Sarah Vaughan. In 1940-41 he was the piano player and arranger for the Kansas City band Harlan Leonard and his Rockets. He and lyricist Carl Sigman wrote "If You Could See Me Now" for Sarah Vaughan and it became one of her first signature songs. According to the composer, his greatest influences were George Gershwin and Duke Ellington.

In the late 1940s, Dameron wrote arrangements for Gillespie's big band, who gave the première of his large-scale orchestral piece Soulphony in Three Hearts at Carnegie Hall in 1948. Also in 1948, Dameron led his own group in New York, which included Fats Navarro; the following year Dameron was at the Paris Jazz Festival with Miles Davis. From 1961 he scored for recordings by Milt Jackson, Sonny Stitt, and Blue Mitchell.