The songs have both the benefit of not having some sweet spitten bars, but having a cool collective chorus sung in these records. They are the Greatest Hip Hop & R&B Collabrations Ever.
http://m.ranker.com/list/greatest-hip-hop-and-r-and-b-collabration/makumim,
Lets Get Down
Tony Toni Tone Ft DJ Quik
I'll Be There for You / You're All I Need to Get By
Method Man Ft Mary J Blige
Home Alone
R.Kelly Ft Keith Murray
Fantasy (remix) (feat. Ol' Dirty Bastard)
Mariah Carey Ft ODB
I'll Be Missing You
Puff Daddy Ft Faith Evans & 112
All That I Got Is You
Ghostface Killah Ft Mary J Blige
If I Ruled The World
Nas Ft Lauryn Hill
Can't Deny It
Fabolous Ft Nate Dogg
No Diggity
Blackstreet Ft Dr.Dre & Queen Pen
You Got Me
The Roots Ft Erykah Badu & Eve