[2] She first attracted notice as a pianist during the second world war as a regular performer at the famous National Gallery wartime lunchtime concerts organised by Myra Hess.
[1] Her evident virtuosity quickly led to performances of challenging and otherwise neglected romantic and contemporary music repertoire, such as Liszt's Piano Concerto No 2 with the BBC Symphony Orchestra conducted by Constant Lambert on 5 May 1945,[3] and (on 30 May 1945 with Frederick Thurston and others) the first broadcast performance of Hindemith's Quartet for clarinet, violin, cello and piano.
[8] On 28 August 1945, aged just 23, Greenbaum made the first of 13 appearances as a soloist at the BBC Proms with a performance of Constant Lambert's The Rio Grande.
[11][12] Despite some underlying hostility the work was received by the audience with unexpected enthusiasm, and (according to The Musical Times) she played with "immense courage".
[2] After a short-lived marriage to the cellist Terence Weil (with whom she played as a duo in the 1940s and early 50s) Greenbaum married psychiatrist Andrew Crowcroft in 1956.
Andrew's posting to Toronto gave Kyla new opportunities in Canada including performing and recording Noospheres by Charles Camilleri and teaching Aesthetics at York University.
For instance, on 12 May 1979 she premiered (and subsequently recorded) the piano work Noospheres (1977) by the Canadian composer Charles Camilleri at Canada House.