Whiteman billed the singing trio as The Rhythm Boys.

Crosby's prominence in the Rhythm Boys helped launch his career as one of the most successful singers of the 20th century.

He continued to perform with his group The Rhythm Boys until the end of the decade, when he left the music business altogether.

Pennington continued to perform in both the Western Rhythm Boys and another band called the Starliners.

The threesome, now including pianist and aspiring songwriter Harry Barris, were dubbed "The Rhythm Boys".

During his time with Arnheim, the other two Rhythm Boys were increasingly pushed to the background as the emphasis was on Crosby.

Another important role model was the Rhythm Boys.

After the Rhythm Boys broke up, they reunited only once, to appear together on the "Paul Whiteman Presents" radio broadcast on July 4, 1943.

His older brother, Al Rinker, formed the Rhythm Boys with Bing Crosby in 1925.

Photos of the dance band 'Ulrich Tukur & the Rhythm Boys'