using Search Module to search information NOT from the node table

Issue Summary

Hello, I am having a difficult time trying to figure out how to add my own dataset to the results of a search.module search, I have an artists table with band names and such and I made their own custom page for it. I can't turn it into nodes because I have about 8 relationship laden tables and my brain explodes everything I try to think about converting it into nodes. I have it all working off the node system in terms of displaying and editing, I just need to search it. I'm trying to figure out if there's a way to hook into the search mechanism and query my tables, with my own search logic and stuff based off the keyword and add my information to the dataset, I could even split it between nodes with that keyword and artists matching the keyword. I just need to know how to actually do it.

Any help would be appreciated.