About 5 years ago, Breitbart COO and the singer-songwriter behind the Trump anthem “Fighter,” @mrjondavid, was heading to Nashville for a writing trip to chase down some songs, as they say. The night before his first writing session, the publisher emailed him and said the other writer’s truck broke down in Texas and he wouldn’t be able to make the session. But then the publisher added, “Why don’t you write with @michaelfarren?” Done. The next day, the two songwriters met for the first time, and