The UC Davis Mariachi Ensemble focuses on the study and performance of traditional mariachi music. Genres include Són Jalisciense, Canción Ranchera, Corrido, Huapango, Bolero, Polka, Joropo, Pasodoble, Vals Mexicano, and some contemporary mariachi song-styles. In addition to vocals, members of the ensemble play one or more of the standard mariachi instruments, which include violin, trumpet, guitarrón, vihuela, guitar, harp, or guitarra de golpe.

Under the UC Department of Music, the ensemble is taught and directed by Oscar Garibay, an acclaimed trumpet performer based in southern California, is recognized as a versatile musician. As a classical instrumentalist, Mr. Garibay has won concerto competitions and has internationally toured with several orchestras and bands. As a Mariachi, Garibay has performed on tour with Grammy Award-winning Mariachi Los Camperos. He has also accompanied critically acclaimed artists such as Steven Sandoval, Shaila Durcal, Lupita Infante, and Leo Dan.