Calvin Grant Shofner , known professionally as Cal Smith, is an American country musician, most famous for his 1974 hit "Country Bumpkin."

Singer Cal Smith emerged from Ernest Tubb's band and enjoyed several hits of his own between the late '60s and mid-'70s. His best-known song was the sentimental "Country Bumpkin," but his gritty baritone voice was equally suited to more acid material such as "The Lord Knows I'm Drinking," a sharp denunciation of small-town religious self-righteousness. Smith was born Calvin Grant Shofner in Oklahoma but grew up in the San Francisco Bay area. A guitar player since childhood, he spent time with rodeo performers as a teen and began to think about a show-business career. With the support of his parents, who believed he was less likely to get into trouble on stage rather than in the audience area of a barroom, he began playing professionally when he was 15, at a bar called The Remember Me Cafe. He was paid a dollar and 50 cents a night plus dinner, and his listeners were mostly migrant California vineyard workers.

It was a long time before Smith could make a living playing music, however, and he did jobs ranging from truck driver to bronco buster during the 1950s. He was briefly married, but when his wife made him choose between music and her, Smith chose the former. (He later married again, with more durable results.) Smith appeared on the California Hayride television program soon after its inception in the mid-'50s. He did a two-year stint in the military and returned to the Bay Area after his discharge, working as a DJ at San Jose radio station KEEN and performing around the area in a band whose membership included Bill Drake, the brother of one of Ernest Tubb's Texas Troubadors. Tubb heard him play and following an audition hired him as a rhythm guitarist and MC in 1961. Several of Tubb's '60s hits feature Smith's playing