Agree that it sounds a bit off at 1:06. Real nice flow before and after, but that spot right there feels kind of disruptive.
Mixing-wise… There is some amount of background hiss… that’s certainly acceptable to a degree, and often an artifact of some recording technology, but it seems like the hiss-to-music ratio is a little off. I think if you could turn up the level of the piano, that would be better – it would more overpower the hissing noise, and would generally be more comparable in level to other tracks.
Otherwise, musically, I think it’s great. This could absolutely be a fine musical cue for a production. Would AudioJungle accept it? Hard to say. I can imagine they would prefer something fuller – as suggested, perhaps adding some strings, even if only for part of the track.