Robert "Bob" Effros was born December 6th, 1900 in London, England. At the age of three, his family moved to Memphis, Tennessee. Moving to the South was important to the foundations of Jazz trumpet playing that would influence Bob throughout his illustrious career as a musician. Bob ran away from home at age eleven and getting job on a Mississippi river boat. On the river boat he learned to play the coronet leading him to his true love; the trumpet. His course of trumpet playing began by following the leads of "King Oliver".
Between 1917 and 1919, Bob served as a bugler in the United States Army. After the war ended, Bob settled down in Baltimore playing under big band leader Bea Palmer.Throughout the 20's, Bob played the trumpet as a member of the Vincent Lopez Orchestra. The trumpeter flourished in this environment which lead him to write several hit songs such as: "Why The Twenties Roared", "Tin Ear" "Cornfed" and "Why Don't You Get Lost?" Much of Bob's success can be attributed to the songwriting he did for recording artists such as Fletcher Henderson, Red Nichols & Ben Selvin. Bob returned to England to play shows with beautiful and popular singer, Annette Hanshaw.
The Vincent Lopez Orchestra toured Europe extensively. The most infamous trip being in 1925 on the Ship Leviathan. By 1929, Bob decided he wanted to stay in the States for the remainder of his career to start a family. The Vitaphone label hired Effros as a house musician where he joined a group of up-and-coming performers including banjo player Harry Reser. Within a ten year period Bob Effros appeared on more than 125 different recordings. By 1929, Bob was leading his own orchestra and churning out hits such as "Sweet and Hot", an ode to Chinese soup. Bob was a staple in the studios through the 40's and made a home for himself in Queens, NY. It was here that he met his wife Selma Sternick. They had two sons, George and Alan Effros.