Freddie Large returned with him, bringing along Tony Briglia, a fellow Canadian and long-time drummer with the famed Casa Loma Orchestra. Also aiding the cause considerably were trumpeter Bill Kleeb and trombonist/arranger Frank Bettencourt. They had both joined Jan in late 1942, with Frank returning after military service to update and take charge of virtually all the band's musical library in addition to his trombone and part-time piano chores. Kleeb's classic trumpet work became a Garber trademark for the better part of a quarter-century.
Memo Bernabei and prewar sideman Al Powers, together with Jo Jo Huffman, rounded out the new reed-section quartet. Jack Barrow, who had also been on the band during the latter 1930s, returned with Bettencourt on trombone, with Ernie Mathias and Vince DiBari joining Kleeb in the expanded trumpet section. Frank McCauley on string bass and pianist Jack Motch, who both helped with arranging, rounded out Jan's new postwar group.
During these years, Jan Garber was to become increasingly well known as 'The Idol of The Air Lanes.' This was an informal title bestowed by announcer Pierre Andre during one of the band's countless broadcasts on Chicago's WGN Radio.
In addition to superior musicians, Jan was blessed with a series of excellent vocalists from the mid-1940s onward. Tommy Traynor and Tim Reardon were early names in the postwar Garber Band, together with Alan Copeland and his 'TwinTones' singing group. Also emerging from the late 1940s were Bob Grabeau; Roy Cordell (called "the best of them all" by Jan's widow, Dorothy); Larry Dean; Julio Maro; and Marv Nielsen. Prominent among Jan's postwar female vocalists were Thelma Gracen, Julie Vernon and Janis Garber (who was billed for a time as 'Kitty Thomas').