Cheryl Lynn Praises Kendrick Lamar & SZA's 'Luther' Topping Billboard for 7 Weeks

Kendrick Lamar and SZA are on a red-hot streak with their "Luther" record owning the Billboard Hot 100 for 7 weeks straight ... a feat the song's sample inspiration cannot wrap her head around!!! TMZ Hip Hop reached out to Cheryl Lynn, the veteran…