What's That Song That Goes Like Get It On Get It On?

Not exactly sure which song you could mean. The 2 that come to mind are:

Marvin Gaye's 1973 "Let's Get It On":
"I've been really Trying', baby
Trying' to hold back this feeling' for so long
And if you feel like I feel, baby
Then come on, oh, come on
Who, let's get it on
Ah, babe, let's get it on
Let's love, baby
Let's get it on, sugar
Let's get it on"

and T. Rex's 1971 release "Bang a Gong (Get It On)":*
"Get it on, bang the gong, get it on
Get it on, bang the gong, get it on"
*Originally just "Get It On" in the UK, Retitled in the US.