I can't for the life of me find it, but years ago I read that the 1970's had more #1 hits in minor keys than any other decade Billboard tallied. As a child of t

I can't for the life of me find it, but years ago I read that the 1970's had more #1 hits in minor keys than any other decade Billboard tallied. As a child of the late 60's early 70's, it certainly feels like sad songs evaporated over the years. I was too old to enjoy grunge, so I'm not sure if that counted, but it definitely seems like songs were moodier and sadder in my childhood. Funny if it turns out that everyone thinks this regardless of decade!