Aaron Sachs, who was born in New York City, started as a young swing protégé of Benny Goodman, and later eased into bebop music, playing with Earl Fatha Hines. He then formed his own bands, with some success recording and touring. He married singer Helen Merrill in 1948, a union which lasted only a few years. Their only child was their son, Allan P Sachs, professionally known as Alan Merrill born in 1951. In the 1960s, Aaron Sachs went into Latin music, playing with the greats of that genre, including Machito, Tito Puente, and Tito Rodriguez. Aaron Sachs has written a hit song for Tito Rodriguez, titled El Mundo De Las Locas and also composed for drum legend Louis Bellson, with the mainstay tune Blast off. He also co-wrote a popular song for bandleader Machito with Henry Glover during the twist dance craze titled Twist Changa (parts one and two) a double a-sided single in 1959, on Roulette records.
Sachs recorded several solo albums (cf. discography). He has also recorded with Stan Getz, Sarah Vaughn, Chet Baker, Billie Holiday, Red Norvo, Gene Krupa, Anita O'Day, Cozy Cole, and many other significant artists in the jazz field.