I've been through some phases, but the underlying theme of my tastes has been pop music.
Ten years ago I was fond of Mariah Carey, Toni Braxton, and Tracey Chapman. I was getting over a Classical/Jazz phase where I had been listening to a lot of classical and Jazz.
Twenty years ago, I was listening to a lot of Contemporary Christian music. I was struggling through some tough times and a major depression and music by Amy Grant, Micheal W. Smith, Michael Card and John Michael Talbot helped me.
Twenty years ago I was enjoying the end 2nd British music invasion enjoying the Pet Shop Boys and Simply Red. Also back then Whitney Houston wasn't a crack head.
Thirty 30s ago I still remember well. It was the time of mega sellig albums like Fleetwood Mac, Boston, Framptom Comes Alive. Great songs by Elton John, Paul McCartney and Wings, Paul Simon, Diana Ross, Chicago, Queen.
Great R&B by Harold Melvin & the Bluenotes (Teddy Pendergrass), the Manhattans, Staple Singers (Let's Do it Again), Ohio Players, Earth Wind and Fire
30 years ago, was also a time of what I consider an awesome time in music, others will disagree, but DISCO!!! KC & Sunshine Band, Donna Summer, Chic.
I guess I'll always love the 70s because pop music was all over the radio, unlike today. I still love a lot of music today, but being a child of the 70s I love that music the best.