Which three sentences in this excerpt from Arthur Conan Doyle's "The Contest" suggest that the author's tone is mocking?

1 - the low note was a grunting, a rumble, the deep discordant growling of an ill-conditioned dog.

2 - all the while the lyre twanged and thrummed, sometimes in front of and sometimes behind the voice of the singer.

3 - many a singer better than this absurd fob had driven amid execration and abuse from the platform.

i just took the test for plato.