Music Trivia: Songs of 1990

I will list some song titles from 1990. You provide the names of the artists, groups or bands that released each song. The songs are either from an album released in 1990 or released as a single in 1990 or charted as a single in 1990. Questions #8 and #14 are harder so I gave you 2 songs by the same artist in hopes the additional info might help.