This is the 6572nd most frequent Turkish word.
arto
"Arto" is not a standard Turkish word; it is typically a proper name.
In this sentence, 'Arto' is used as a proper noun, referring to someone's name.
Arto güzel bir şarkıcıdır.
Arto is a nice singer.
Here, 'Arto' again is a proper noun, describing a person and emphasizing their innovative qualities in their art.
Arto sanatında çok yenilikçi birisi.
Arto is very innovative in his art.
In this sentence, 'Arto'nun' uses 'Arto' in the genitive form, indicating possession of 'hikayesi' (story).