Here's John McCain in 2002 croaking out Barbara Streisand tunes. The point of the skit is that McCain can't sing and Streisand can't govern, so each should stay out of each other's business.
However, the joke may be on McCain. (Or, it may be McCain!)
Fact: Barbara can sing. Fact: She's never claimed to know how to run a country.
Fact: McCain can't sing. Fact: McCain's retrograde economic and military policies are bankrupting his country financially and morally.
(BTW: Notice the discomfort, anger and hate McCain emotes in what is supposed to be a comedy skit.)
Instead, McCain and his understudy, Queen of Alaska, should consider careers as Vaudeville Act on the FOX Dominionist Channel.