There's definitely songs that have gotten cleared that samples Sade as a bands music in terms of instrumentation, or interpolation of the music or a cover song...
...but I can't think of any other song where she's allowed her vocals to be used to create such a prominent element of the song like with "Hard Time Hustlin" (i'm drawing a blank if there's even another song that samples her vocals at all) and she's definitely never done for another artist what she did for Kray in terms of the song being a single for his project and her allowing her name to be listed as a feature and even having the label send him the master for her video "Feel No Pain" so he could incorporate it into his music video. From what I recall from the stuff i've read or watched regarding this is that her husband being a big Bone fan is what prompted her to clear the sample but when they sent her the draft of the song she liked it so much she went above and beyond in allowing it to get as big a push as possible and didn't kill him on the publishing either, a lot of big names like that will clear whatever but take damn near 100% of the pub.
People have speculated before that she doesn't really rock with Hip Hop as a whole or rappers in general, Drake even suggested she "probably doesn't really know about the genre" after she declined to work with him after he was going around saying "expect a record with Sade on the album" lol
But really what it is is she just has integrity when it comes to her artistry and is protective of her music and image. When asked about her thoughts on hip hop she had this to say...
"I like songs with sort of more heavy rap. I like Raekwon’s album [Only Built 4 Cuban Linx II], you know from the Wu-Tang Clan,” Sade explained to radio host Tom Joyner. “I listen to just about anything that speaks to me, and anything that’s sort of got a bit of soul and a bit of real feeling in it.”
Additionally, Hip-Hop fans learned last week that Sade and legendary Queens lyricist Nas quietly worked together in 2000 for an expected remix single to Lover's Rock. According to producer Salaam Remi, the singe's label Sony has possession of the track.
It kinda speaks volumes that someone who's artistry is respected as much as Sade respected Krayzie's artistry so much that she allowed for "Hard Time Hustlin" to be the closest thing the Hip Hop world has ever gotten to a Sade rap feature.
