During the 1993.11.12 show, Krist Novoselic tunes his bass before "
Polly" and plays the riff to "La Bamba" for about fifteen seconds.
(Richie Valens did not write the song, but his adaption is perhaps the best known version from the 20th century. DN member Elwha explains, "It's a traditional Mexican folk song about Mexico's defeat of an invading French force, I believe in the Yucatan Peninsula area, back like in the early 1800s post Mexico's independence from Spain." See also
Musical Spanish. Thanks also to DN member Adam D.)