<P> `` That Lady '' is a 1973 R&B and soul song by The Isley Brothers , released on their T - Neck imprint . The song was originally performed by the group nearly a decade before in 1964 ( released as `` Who 's That Lady ? '' ) inspired by The Impressions . After signing with Epic Records in 1973 , the eldest members of the group ( O'Kelly Isley , Jr. , Rudolph Isley and Ronald Isley ) had included younger members , guitarist Ernie Isley , bassist Marvin Isley and keyboardist / pianist Chris Jasper , as official members . In a response to this transformation , the group gave themselves the moniker of 3 + 3 , describing the three original vocalists in the group and three recruited instrumentalists , inspiring the album title that came out that year . They performed the song on Soul Train on December 14 , 1974 . </P>
<P> `` That Lady '' is a 1973 R&B and soul song by The Isley Brothers , released on their T - Neck imprint . The song was originally performed by the group nearly a decade before in 1964 ( released as `` Who 's That Lady ? '' ) inspired by The Impressions . After signing with Epic Records in 1973 , the eldest members of the group ( O'Kelly Isley , Jr. , Rudolph Isley and Ronald Isley ) had included younger members , guitarist Ernie Isley , bassist Marvin Isley and keyboardist / pianist Chris Jasper , as official members . In a response to this transformation , the group gave themselves the moniker of 3 + 3 , describing the three original vocalists in the group and three recruited instrumentalists , inspiring the album title that came out that year . They performed the song on Soul Train on December 14 , 1974 . </P>
who sang the song who 's that lady
who sang the song who 's that lady
The Isley Brothers
The Isley Brothers