San Marcos has been an endless wellspring of talent over the years that I have spent there. No matter what kind of musical styling you enjoy, someone (or a group of someones) generally has it nailed.. and they are more than willing to let you be a part of their journey. Here are two entries for NPRs Tiny Desk Contest from two sets of all star acts:
Rock Bottom String Band
Henry + the Invisibles
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Chief and TheDoomsdayDevice 