Shredding on the ukulele like a mad dog let loose on the new mailman, Jake Shimabukuro is often referred to as the “Jimi Hendrix of ukulele.” Shimabukuro produces sounds no one quite expects from a tiny four-stringed instrument; he has said that although he feels the ukulele is the underdog of all instruments, “if everyone played the ukulele, this world would be a much happier place.” He’s best known for his cover of George Harrison’s “While My Guitar Gently Weeps,” which boasts over 11 million views on YouTube. See him live on Friday, Feb. 15, at the Marin Center. 10 Avenue of the Flags, San Rafael. $25—$45. 8pm. 415.499.6400.