And … Radio Derb is on the air! Greetings, listeners, this first day of April, from your enigmatically genial host John Derbyshire.Before we proceed with the news, I have an entertainment recommendation for you. I urge you to get tickets, if you can, for this new Broadway musical you may have heard about, based on the life of Martin Luther King. Mrs Derbyshire and I went on Saturday last.It's most imaginatively done, with an all-white cast, and all the music done in Country and Western style. Michael Richards plays the part of Dr King, Will Ferrell is Jesse Jackson, and Bobby Moynihan plays the young Al Sharpton. The songs are great. I especially liked Dr King's rendition of "I'm plucking for God" as he plays the banjo. Brilliant. Don't miss it.If you have trouble finding tickets, make sure you tell Ticketmaster that you heard about it on April First.