Martha Elenor Maguire is an American musician who is a founding member of the country band the Chicks and the country bluegrass duo Court Yard Hounds. She won awards in national fiddle championships while still a teenager. Maguire is accomplished on several other instruments, including the mandolin, viola, double bass and guitar. She has written and co-written a number of the band's songs, some of which have become chart-topping hits. She also contributes her skills in vocal harmony and backing vocals, as well as orchestrating string arrangements for the band.

The Chicks are an American country band from Dallas, Texas. Since 1995, the band has consisted of Natalie Maines and sisters Martie Maguire and Emily Strayer. Maguire and Strayer, both née Erwin, founded the band in 1989 in Dallas, Texas, with bassist Laura Lynch and vocalist and guitarist Robin Lynn Macy. They performed bluegrass and country music, busking and touring the bluegrass festival circuits and small venues for six years without attracting a major label. In 1992, Macy left and Lynch became the lead vocalist.