the clover". 20th century uses By the early 20th century the words increasingly were used together in secular black slang with a double meaning, ostensibly referring to dancing and partying, but often with the subtextual meaning of sex. In 1922, blues singer Trixie Smith recorded "My Man Rocks Me (with One Steady Roll)," first featuring the two words in a secular context. Although it was played with a backbeat and was one of the first "around the clock" lyrics, this slow minor-key blues was by no means "rock and roll" in the later sense. However, the terms "rocking", and "rocking and rolling", were increasingly used through the 1920s and into the late 1940s, especially but not exclusively by black secular blues and jump blues musicians, to refer to either dancing or sex, or both. The term maintained a strong sexual connotation in the blues and R&B genre into the 1950s. In 1927, blues singer Blind Blake used the couplet "Now we gonna do the old country rock / First thing we do, swing your partners" in "West Coast Blues", which in turn formed the basis of "Old Country Rock" by William Moore the following year. Also in 1927, traditional country musician Uncle Dave Macon, with his group the Fruit Jar Drinkers, recorded "Sail Away Ladies" with a refrain of "Don't she rock, daddy-o", and "Rock About My Saro Jane". Duke Ellington recorded "Rockin' in Rhythm" in 1928, and Robinson's Knights of Rest recorded "Rocking and Rolling" in 1930. In 1932, the phrase "rock and roll" was heard in the Hal Roach film Asleep in the Feet. In 1934, the Boswell Sisters had a pop hit with "Rock and Roll" from the film Transatlantic Merry-Go-Round, where the term was used to describe the motion of a ship at sea. In 1935, Henry "Red" Allen recorded "Get Rhythm in Your Feet and Music in Your Soul" which included the lyric "If Satan starts to hound you, commence to rock and roll / Get rhythm in your feet..." The lyrics were written by the prolific composer J. Russel Robinson with Bill Livingston. Allen's recording was a "race" record on the Vocalion label, but the tune was quickly covered by white musicians, notably Benny Goodman with singer Helen Ward. Other notable recordings using the words, both released in 1938, were "Rock It for Me" by Chick Webb, a swing number with Ella Fitzgerald on