The Beatles’ last song almost never happened until one filmmaker stepped in and made it possible for fans to finally hear it.

Inspiration for the Beatles' track, "Tomorrow Never Knows," came shortly after a tense interaction between John Lennon and a bookstore clerk.

But now—to paraphrase a familiar lyric—their lives have changed in, oh, so many ways. Badger and Kepner are among the students this semester who took the course The Beatles: From Yesterday to Tomorrow ...