If you’ve never heard Paco Peña, your ears have been sorely deprived. Peña is the legendary flamenco guitarist from Spain that has been dazzling and mesmerizing audiences with his skill for close to five decades. Now 70, he can still deftly slay the frets with his fingers and elicit torrents of emotion and passion from the strings. See him on Saturday, Feb. 23, at the Marin Center. 10 Avenue of the Flags, San Rafael. $20-$50. 8pm. 415.499.6400.