taken from the 'Teaching Note':
'This joyful little opus on two well-known traditional sea songs: The Golden Vanity (from bar 7) and The Mermaid, who surfaces at the last beat of bar 36, swimming along in Bb major until the triumphant return of The Golden Vanity (G major) at bar 50. You will doubtless also recognise quotes from two other very well-known nautical tunes!...'
Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).