The term 'Banjo Cousins' refers to the two stringed instruments, the banjo and the ukulele. The banjo is a four, five, or six-stringed instrument with a thin membrane stretched over a frame or cavity as a resonator, typically played with a plectrum or fingers. The ukulele is a four-stringed instrument of Hawaiian origin that is similar in appearance and construction to a small guitar. Both instruments are popular in folk music and have been used in many genres of music.