It's tune and the song "Bonny Jean of Aberdeen" is a lot older than Ballantyne's "Castles in the Air", both the latter song and tune (as an ABC) are on my website (see Scarce Songs 1), and from ABC2MUS you can get a chord progression from the ABC (Same tune as "Ball of Kerriemuir" and "The Stuttering Lovers"). www.erols.com/olsonw