In the BNC World -
It is pleasing/pleasant to hear something (BUT with it as the subject):
When Bernie Goodfellow arrived with two basses for us to look over, it was pleasing to hear him qualify them with, "They've already done some serious gigging -- I hope you don't mind too much."
"It's very pleasant to hear this," he said, not at all shocked by my honesty.
Or something is pleasant/pleasant to the ear:
This is undeniably in keeping with the perfect structure of the three quatrains and final couplet to produce an overall symmetry making the poem pleasant to the ear if read aloud as well as to the mind.
Much as she hated to admit it, it was a nice name, masculine, strong, yet soft and pleasant to the ear.
The earl's voice was low-pitched and full, pleasing to the ear, and the news he had communicated even more pleasing.
My one criticism of SansAmp has always been the harshness of the top end; the GX-7 certainly has less odd harmonics and so produces a distortion sound which is more pleasing to the ear.
Pleasing to the ear.
No instance of "pleasant/pleasing to ear(s)" is found.