What type of music is most popular?
the most popular type of music is pop and R+B.
All types of music are popular with different people, but if we were talking about the charts then I would have to say R+B or rap.
I don't know what the most popular music was in the 90s but grunge (nirvana and pearl jam etc) was very popular so was Brit pop (oasis and blur). Also boy bands were extremely popular with take that being one of the biggest. Just to add, I do know that nirvana was from the type of music called "punk rock"