music: Song: Name The Artist: Diary?

Questions

Those big black cd's that you see at garage sales that people call "albums" are made of _____?

Though they had 9 #1s in the UK, Abba's only #1 was this?

Title & Last Name of Lyricist: "I never had the least notion that I could fall with so much devotion..."?

Title & Last Name of Lyricist: "Shake your thang, like a boomerang..."?

Title & Last Name of Lyricist: "Without your love, it's a honky tonk parade..."?