Meanwhile Uchpa has answered my request: The original song is from them. Than came Alborada and many others. The musical notes I have transcribed by ear, using the famous interpretation from Wayra. This arrangement is especially for the Ocarina with guitar accompaniment. The guitar-solo I wrote new.
Original Lyrics (Quechua):
Ananau, ananau
Nispaniwashkanky
Ñuqallapiñam chay ña wiky.
Ananau, ananau
Nispaniwashkanky
Wiñaypaqchum ñuqa qawasqaiky
May runallam kakuchkanky
Kaycunallapy waqanaypaq.
Wañuptyqa ñakawanky
Manam munanichu chay pasayta.