Both Aaliyah and Lefteye were black american singers. People usually refferr to them as R&B’s lost soul sisters. ‘Sister’ meaning ‘friend’
During the song Mya says ‘I seen a rainbow yesterday’ refferring to Lefteye’s rap in tlc’s song ‘waterfalls’. During the second bridge Mya says ‘your one in a million’ refferring to Aaliyah’s song ‘one in a million’. RestInPeace Angels.

Lefteye(left) Aaliyah(right)