On Jan. 16 late Detroit-bred singer Aaliyah’s 36th birthday, Frank Ocean posted a stripped-down cover of the Isley Brothers’ “At Your Best (You Are Love)” on his Tumblr.

The 1976 song was also covered by Aaliyah, released as a single off 1994’s Age Ain’t Nothing But a Number. Toward the end of the track you can hear what sounds like a snippet of funky, all-new music from Ocean.