Guitarrero can mean either a guitarist or someone who makes guitars. It's a less common word than 'guitarrista' for a musician, making it more unique.
In this song, the lyrics
Get ready to move with Los Alameños De La Sierra's "Son Habladas (En Vivo)"! This live track is all about the joy of dancing and the lively atmosphere of a party. The singer talks about what "the man wants in his palm" [lo que quiere el hombre en la palma], referring to the music and the rhythm that makes everyone want to dance.
He mentions knowing a "guitar player, comrade of heart" [guitarrero camarada de corazón] and encourages everyone to "dance, dance, dance" [baila, baila, baila] to this "tasty rhythm" [ritmo sabroso]. The song also playfully repeats the line "I don't want the grated coconut" [no quiero el coco rayado], which seems to be a fun, nonsensical phrase that adds to the lighthearted party vibe. It's a call to let loose and enjoy the music, especially with the mention of Guadalajara, suggesting a lively Mexican party scene.