Name That Tune

Today, B3 spotted a McDonald's from our taxi. He got excited, and I braced for the fit that would follow the announcement that we would not be having a hamburger for lunch.  Instead of even asking, he immediately broke into song  I couldn't help but smile. Six months ago, he couldn't have sung even half of these words.He would have attempted to fill in the blanks if I sang it, but even that was sketchy. Today he sang - voluntarily.   Sure, you may not understand each word he sings, but he's singing!

And what's on his farm? A John Deere Tractor, of course!

Note how he's an over achiever on the E I E I O part :).