Returning to Music from Past Sessions?

I'm Remco and I'm from Holland and my question for the band is: Which song of idea for a song took the most time to record. Are there for example songs which haven't made a record in the 80ties but where picked up again a decade later? Or parts were written for a song and used years later?

"During album sessions, we create an excess of tracks, but they usually do not end up getting finished. Some are more developed than others - mostly, they do not have lyrics. This is why we tend not to return to older material when we commence work on a new project. However, there are a few treasures hidden in the vaults, so one day, when we finally do an anthology, we thought it would be interesting to complete some of these. Thanks for the question. The Band"