From junior high throughout high school, I went through phases. I would listen to a particular style of music exhaustively — much to the dismay of my family — then move on to something else. 1985-1986 was my New Wave period. 1987-1988 was my jazz-pop and radio hit era. 1988 was the year I discovered Andrew Lloyd Webber and Stephen Sondheim. 1989 found me getting into college rock and classical music.
When I started college, my listening habits "stabilized", and I didn’t listen to one type of thing at the expense of other stuff. That doesn’t mean I still didn’t have my phases, each of which will become apparent as I compile more lists.
1989, though, was the year that would establish the foundation of my listening habits today. It’s heavy on what would become alternative rock, with other genres providing some needed contrast.