tuna Aupa is incorrectly written and should be written as "it hop tuna!" being its meaning: Hop tuna!: expression of moods, similar to top tuna!, excellent tuna!, which is used to encourage members of the tuna, or estudiantina; musical group of students that are dressed with period costumes and coats adorned with colorful ribbons. Instruments used in Spain, traditionally, are guitar, lute, bandurria and tambourine, although their culture-specific instruments have been incorporated in Latin countries.