The Isley Brothers are an American musical group originally from Cincinnati, Ohio, originally a vocal trio consisting of brothers O’Kelly Isley, Jr., Rudolph
Isley and Ronald Isley. The group has been cited as having enjoyed one of the "longest, most influential, and most diverse careers in the pantheon
of popular music".
Alongside a fourth brother, Vernon, the group performed gospel music until Vernon's death a few years after its formation. After moving to the New York
City area in the late 1950s, the group had modest chart successes during their early years, first coming to prominence in 1959 with their fourth single,
"Shout", written by the three brothers. Initially a modest charted single, the song eventually sold over a million copies. Afterwards the group recorded
for a variety of labels, including the top 20 single, "Twist and Shout" and the Motown single, "This Old Heart of Mine (Is Weak for You)" before recording
and issuing the Grammy Award-winning hit, "It's Your Thing" on their own label, T-Neck Records.
Influenced by gospel and doo-wop music, the group began experimenting with different musical styles incorporating elements of rock and funk music as well
as pop balladry. The inclusion of younger brothers Ernie Isley (lead guitar, drums) and Marvin Isley (bass guitar), and Rudolph's brother-in-law Chris
Jasper (keyboards, synthesizers) in 1973 turned the original vocal trio into a self-contained musical band. For the next full decade, they recorded
top-selling albums including The Heat Is On and Between the Sheets.