Toto - "I'll Be Over You"

When it's 1980-something and you needed some backing vocals to your Adult Contemporary song, who ya gonna call?  MICHAEL McDONALD!  Patti LaBelle, Kenny Loggins, and even James Ingram (Mr. Ya Mo Be There) picked up the phone and dialed Mr. Michael McDonald when their song needed some smooth vocals.  Thankfully, someone passed Michael's phone number to Toto and they speed dialed him in 1986 for some help on "I'll Be Over You".  Obviously, the song shot to #1 and became their second #1 Adult Contemporary hit.