It is a classic Alto C (C3) 10 holes ocarina by Rotter. No 'flaws', even if the lower E (Mi) is a little bit 'unexpected' or 'weak', and requires time to become used in order to play it effectively. It is a quite 'unusual' aspect of this ocarina, affecting a little bit the extemporaneous development of a performance. If compared with the Rotter Alto C (C3) "Fabio Gallini" 10 holes ocarina, this ocarina seems a little bit lower in quality, but that does not mean it is a poor ocarina. It is a very good musical instrument with its particular 'character', and it requires a bit to become used to it. The tone is very good and appropriate, and it can give a lot of satisfaction to the player over time and also for 'sudden' indoor and outdoor exhibitions.