The music of Cuba, including its instruments, performance and dance, comprises a large set of unique traditions influenced mostly by west African and European (especially Spanish) music. Due to the syncretic nature of most of its genres, Cuban music is often considered one of the richest and most influential regional musics of the world. For instance, the son cubano merges an adapted Spanish guitar (tres), melody, harmony, and lyrical traditions with Afro-Cuban percussion and rhythms. Almost nothing remains of the original native traditions, since the native population was exterminated in the 16th century.