Evening Quiz: Rafael Betancourt or John Cage?

Below is an audio clip that is either an audio clip of an avant-garde work by late American composer John Cage or the result of an attempt by the author to record, this afternoon, a conversation with Rockies closer Rafael Betancourt regarding the latter’s tendency (documented last August by Jeff Sullivan) to work almost exclusively on the outside corner of the strike zone to left-handed batters — except, instead of that conversation, is only silence for reasons likely owing to the author’s incompetence.

Below the audio clip is a quiz of some consequence, which the reader is invited to take.

To wit:

John Betancourt, Rafael Cage

And to even further wit: