Visit any website that specializes in MIDI formatted (.mid) music tracks. Examples include the Free MIDI File Database, Midi.com, MIDI World, MIDIZone and Music Robot. To find quality Blues files, you will likely need to explore multiple sites.
Search by genre, where applicable. Some MIDI sites will organize files according to genre, such as "Rock," "Pop" and "Jazz." For example, the Free MIDI File Database contains a "Blues" tab along the top of the homepage. Try to find a "Blues" page at each website you visit, and click on it to find a list of Blues tracks. In some cases, Blues files may appear under "Jazz."
Search by artist or song title. In instances where you cannot specifically find a Blues genre page, you may have better luck by searching with more specific information. For example, on websites that sort files according to artist, you might search for B.B. King, Muddy Waters or Robert Johnson. You may also search for specific songs like Memphis Blues or Stormy Monday. Look for a white horizontal box indicated by the word "Search," usually near the upper-right corner of each page. Sites like Music Robot offer comprehensive search fields, allowing you to locate songs instantly.
Search using traditional search engines like Bing, Google or Yahoo! By entering specific information, like "Blues MIDI tracks" or "T-Bone Walker MIDI," you can instantly find web pages that offer the types of MIDI files you hope to find.