Belford Cabell "Sinky" Hendricks (May 11, 1909 – September 24, 1977) was an influential American composer, pianist, arranger, conductor, and record producer. Born in Evansville, Indiana, Hendricks developed a passion for music early in life, inspired by his father bringing home a piano. He pursued his education at Indiana State Teachers' College, now Indiana State University, where he majored in science and music, graduating in 1935.

Hendricks is best remembered for his contributions to the soft R&B genre during the 1950s, often collaborating with Clyde Otis and Brook Benton. His versatility as an arranger allowed him to work across a range of musical styles, from big band swing for Count Basie to blues ballads for Dinah Washington and Sarah Vaughan, R&B-influenced pop for Brook Benton, and country and western for artists like Nat King Cole and Al Martino. He also ventured into early soul music with Aretha Franklin.

Among his most successful compositions are "Looking Back" and "It's Just a Matter of Time," both co-written with Otis and Benton. "It's Just a Matter of Time" achieved significant success, charting multiple times across different decades and genres, including a #1 R&B hit for Brook Benton in 1959 and a #1 country hit for Randy Travis in 1989.

Hendricks' career spanned from the 1930s to the 1960s, during which he worked with prominent labels like Mercury and Columbia. His contributions to music were not only as a songwriter but also as an arranger, with many of his arrangements charting during the 1950s and 1960s.

In addition to his musical career, Hendricks served in the United States Army during World War II and was involved in one of the first interracial radio programs in the United States. He passed away in 1977, leaving behind a legacy as one of the great arrangers of the 20th century.