So, how long does a song need to exist before it becomes an "oldie"? For me, oldie is anything that was an oldie when I was a child, and I'm going to lump in the music of the 80s in that group. So, let's say music from 1988 and older is an "oldie" to me. (When I was a child, I considered everything from around 1979 and older to be an oldie.)