A Musical Mystery

There are a cou­ple of iPhone apps called Shaz­am and Lis­ten that iden­ti­fy music by hold­ing up the phone to take in the sound as it’s being played or repro­duced, but they’re pret­ty much lim­it­ed to songs on the radio. Some ren­di­tions of music don’t lend them­selves to that method of iden­ti­fi­ca­tion. For exam­ple, a friend of Pam recent­ly got a music box. It had been in their fam­i­ly for a long time, and it played a tune that she did­n’t rec­og­nize. Her back­ground is Scot­tish, and although we did­n’t rec­og­nize the tune, it has a vague­ly folk-song sound to it, and at one part, I even detect­ed a ‘Scot­tish Snap’, which is the dis­tinc­tive rhyth­mic pat­tern of a short note fol­lowed by a longer one (after sev­er­al of the usu­al long-short, long-short pat­terns). Here’s what the music box sounds like. I let it play the tune twice:

Any idea what this melody is? I’m guess­ing it’s a Scot­tish folk song, but it might pos­si­bly be a pop­u­lar tune from years ago.