We did. And that's what started MyBirthdaySonglist.com.
During a beery night with amongst friends, we spent an evening creating a playlist for a wife's 40th birthday. It featured every song which was number 1 on all her Birthdays.
It took too long, and we thought, 'there must be a better way of doing this?'... Formed sometime around 2010 and been plodding along since