Q: thoughts on songs with 2 titles (i.e. good riddance (time of your life))
A: sometimes that's the only way. in this case i can imagine why: "time of your life" obviously feels like the title lyric, when you listen to the song. but, on paper, the title "time of your life" probably looks like a party song or something, and doesn't look like a sort of goodbye song. so there was probably a need to convey the goodbye vibe in the title. also, sometimes songs with non-lyric titles might add the more obvious lyric title in parentheses later, if the song becomes a hit. for recognizability. On the other hand, sometimes parentheses may be just used for fun