Here's Tennessee Ernie Ford's version - could be Kay Starr on the alternating lines and duet..doesn't say.

AIN'T NOBODY'S BUSINESS
Recorded by Tennessee Ernie Ford
Words and music by: (not listed)

F: You got a gal you love on Sunday
F: Then you got another for Monday
M: Ain't Nobody's Business but my own
M: Sittin' by the phone, a-waitin' for your call
M: You're out with somebody havin' a ball
F: That Ain't Nobody's Business but my own.

CHORUS
D: Nobody's Business, Nobody's Business
D: Nobody's Business but my own
D: Nobody's Business, Nobody's Business
D: Nobody's Business but my own.

F: All night long you're playin' poker
F: Tell me, what's the name of that joker?
M: That Ain't Nobody's Business but my own
M: I come over and say here I am
M: Then I hear the back door slam
F: That Ain't Nobody's Business but my own.

CHORUS

F: You wear the prettiest ties and collars
F: Where 'bouts do you get those dollars?
M: Ain't Nobody's Business but my own
M: You always talk about settlin' down
M: When I bring the ring, you're not around
F: Well, I'll be there the next time that you call.

CHORUS

F: So let's not fuss and let's not fight
M: I'm sick and tired of sayin' goodnight
F: Lets' make up and hold each other tight
D: Love each other in all kinds of weather
D: Let's go into business together
D: We could start a business of our own.

CHORUS