The new song "Ray Charles" by Chiddy Bang is getting two BIG thumbs up from the famous singer's family ... even though they claim Ray wasn't a real fan of rap music.
TMZ spoke with Blair Robinson -- Ray's grandaughter and an aspiring singer -- who says tells us, "Is it grandfather's kind of music? No ... but I'm sure he's up there giving it a good chuckle."
She adds, "As one artist to another, Ray would have respected the group's craft."
For those unaware, "Ray Charles" by Chiddy Bang is becoming a breakout hit -- it's already #55 on the Billboard 200.
Blair says the group did make one mistake -- she joked, "They should have let ME sing the hook!"
Ray Charles' Fam:
He'd Respect New Tribute Song
... But He Didn't Like Rap
3/11/2012 3:35 AM PDT BY TMZ STAFF
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