What singles have b-sides that were never released on an album?

[AyusakiFan]

Originally Posted by Picaflor 7/4

Actually, teens was put on an album, just not an ayu album. It was thrown on to TRF's lif-e-motions album. "teens meets Ayumi Hamasaki". It's an ayu cover of the same song by the same band released back in 1995 on their "Happening Here/Teens" single. Then they made an acoustic version of it and put it on her Startin' single.

*I'm a bit iffy with this one because the original version was never released in ayu's discography (but it was in TRF's since it is a cover). The song on the Startin'/Born to Be... single is "teens (acoustic version)" which is obviously not "teens (Original Mix)" but I threw it up there anyways because neither it, nor the original mix ever made it onto an ayu album.

Since the original version of "teens" isn't on the Startin'/Born to Be single, I'm a bit iffy about buying the single just to get an acoustic version of a song. But at the same time, I don't want to buy TRF's Lif-e-motions album just to get it either. I might just download it.