How to Use the Wildcard Filter You can run Wildcard Searches to find songs that are just beyond reach. This premium feature is very useful if you want to push yourself and try harder material. The easiest way to explain how Wildcard Searches work is to simply show you. So check out the quick video above. And as always - happy strumming. -Austin P.S. If you know anyone who’s struggling on the guitar, ukulele, banjo, or mandolin, consider sharing this video. What Songs Can I Playwith the Chords I Know? To find out, use the Search tool below.