"Boca" is a Spanish and Portuguese word that means "mouth"
About the Music
All the tracks on this recording have been done entirely "by mouth". Everything—even all the percussion—are sounds I made and recorded with my mouth. Yeah kinda crazy but there isn't a single track of synthesizer—its all miked sounds from the mouth!
Note: At the fade out at the very end, you will hear the only lyric of the tune ("boca").