Moore was born in the Gulf Coast town of Port Arthur, Texas, in 1920. His primary instrument was electric mandolin.[2] While a member of the Texas Playboys from 1946 to 1950, he played Gibson electric mandolins: at first an EM-125, and sometime after 1948, an EM-150.[3] Although these are 8-string mandolins, Moore used four single strings instead of pairs. This made his mandolin sound like an electric guitar. In 1952, he commissioned a five-string electric mandolin from Paul Bigsby. Moore was playing in a band led by Bob Wills' brother, Billy Jack. The Bigsby 5-string mandolin had single courses of strings (rather than the paired courses on a standard mandolin) and added a low C string to the standard G, D, A and E. This tuning actually gives the instrument a wider range of notes than a guitar.[4]
Western swing is a hybrid of country, blues, and jazz; Moore's style of playing draws from all of these sources. Moore and his Bigsby mandolin were identified with each other for the remainder of his career.
In the mid-1960s he taught group guitar lessons at the local YMCA in Sacramento, California. He taught every style of music. He operated Tiny Moore Music, a music store in Sacramento, and sold copies of the Bigsby mandolin built by Jay Roberts of Yuba City. In the 1970s he made two albums with for Kaleidoscope Records: Tiny Moore Music and Back to Back, a duet album with Jethro Burns. In 1999, Moore was posthumously inducted into the Rock and Roll Hall of Fame in as a member of Bob Wills and His Texas Playboys.[5]