I’m not sure that Singular Sound has been performing this function but you can find out by contacting Support, support@singularsound.com
You can always search for your song on the forum and if it’s not available, post a request. You might also find the Meta BeatBuddy (BB) group helpful.
There are also users that have generously shared their song lists and spreadsheets here on the forum: My Beatbuddy Stock List After Two Months
Wayne_McNeil has posted his list but I couldn’t find the link.