"Pick the guitar string."
Translation:E hiku i ke kaula kīkā.
'O ka 'aha ka 'ano kaula ke ho'ohana no nā pila ho'okani, i ko'u mana'o.
'aha is the type of string used for modern musical instruments, is my understanding.
(Guitars, ukuleles, mandolins, etc.)
'O ka aha: 'aha is
ka 'ano kaula: the type of string
ke ho'ohana: used, utilized
nā pila ho'okani: musical instruments (modern)
It is sort of funny that they are using kaula when referring to a musical instrument, since kaula can be any sort of string. Maybe 'aha is a set of strings and kaula is an individual string. I am not sure.