The theme song for Half & Half is sung by the gospel singer Tonex and Shanice Wilson (married to Flex Alexander of One on One)..... Actor and comedian FLEX ALEXANDER of the UPN sitcom One on One, and his wife, R&B singer SHANICE, enjoy an outing in Los Angeles with their 1-year-old daughter, IMANI SHEKINAH, their first child. Shanice was in the studio recording the One on One theme song with gospel signer Tonex when she went into labor, and shortly after she finished recording, the baby was born. She is working on a new album.