I meant to post the article. It discusses how Adele's "Hello" ended up on R&B stations. Doesn't say anything about Hip Hop though:
Adele Says 'Hello' to Yet Another Format: R&B Radio | Billboard
"Hello" has already branched out beyond its original radio home genres (pop, adult pop, adult contemporary and adult alternative) by becoming a No. 1 hit, Adele's first, on both Dance Club Songs and Dance/Mix Show Airplay, but it's fairly common for ballads to scale those charts thanks to remixes.
For "Hello" to receive a warm welcome at R&B radio speaks more to the song's universal appeal, as well as its soulful sound.
New York's WBLS championed "Hello" with 27 spins during the tracking week ending Dec. 13. Operations manager Skip Dillard tells
Billboard, "You're looking at one of those songs that touches the masses from the first listen. Adele has a sound coupled with songwriting skills that fits a variety of formats."
KMJQ Houston OM Terri Thomas concurs that Adele's "Hello" transcends format boundaries. "She tells a story through song that so many people can relate to. The fact that she delivers it like a classic R&B power ballad made it an easy decision for us to add it to our playlist."