One September Day

Like a lot of the other comments are saying, I think this mainly about voyeurism. If the song was about his girlfriend, then why would he use the word spy. If you are a spy it means you shouldn't be caught, that is kind of the whole point, and if you are a voyeur, the whole point of the pleasure you get from it, is the fact that the other people don't know you are watching them. See a bit of a connection there?

High life

This song is def a twin to "Unfair" (a song she has been quoted as saying is about falling in love with someone who is already in a relationship) so it is presumably about the same person. Given the references to buying an apartment and not being able to see her love interest "after tonight," it's most likely that she's moving away and she'll "wait a day to break the bad news" (i.e. notifying him that she's leaving once she's already gone). And, of course, the fact that she sees in him a fellow "idealist" and "dreamer" (terms commonly given to people with the INFP personality on the Myers–Briggs Type Indicator (MBTI)) portends that she'll always be left wondering if they would've been perfect together.

The song lyrics were written by the band Van Halen, as they were asked to write a song for the 1979 movie "Over the Edge" starring Matt Dillon. The movie (and the lyrics, although more obliquely) are about bored, rebellious youth with nothing better to do than get into trouble. If you see the movie, these lyrics will make more sense. It's a great movie if you grew up in the 70s/80s you'll definitely remember some of these characters from your own life. Fun fact, after writing the song, Van Halen decided not to let the movie use it.

Jane's Addiction vocalist Perry Farrell gives Adam Reader some heartfelt insight into Jane’s Addiction's hard rock manifesto "Mountain Song", which was the second single from their revolutionary album Nothing's Shocking. Mountain song was first recorded in 1986 and appeared on the soundtrack to the film Dudes starring Jon Cryer. The version on Nothing's Shocking was re-recorded in 1988. "'Mountain Song' was actually about... I hate to say it but... drugs. Climbing this mountain and getting as high as you can, and then coming down that mountain," reveals Farrell. "What it feels to descend from the mountain top... not easy at all. The ascension is tough but exhilarating. Getting down is... it's a real bummer. Drugs is not for everybody obviously. For me, I wanted to experience the heights, and the lows come along with it." "There's a part - 'Cash in now honey, cash in Miss Smith.' Miss Smith is my Mother; our last name was Smith. Cashing in when she cashed in her life. So... she decided that, to her... at that time, she was desperate. Life wasn't worth it for her, that was her opinion. Some people think, never take your life, and some people find that their life isn't worth living. She was in love with my Dad, and my Dad was not faithful to her, and it broke her heart. She was very desperate and she did something that I know she regrets."