Bravo for another treasure from Penny Gardner! The 40 plus songs in this book provide plenty of material for Christmas programs or supplemental lesson work. Organized according to ease of playing, these pieces presume some prior recorder experience. (For those brand new to the instrument, I highly recommend the original Nine-Note Recorder Method text which includes instruction and 30 familiar Christmas songs.)
The duet and trio arrangements in Easy Duets for Christmas allow for creative use of any two or more "C" instruments; imagine "O Come, O Come Emmanuel" or "Lo, How a Rose E'er Blooming" on combined recorder, violin and piano. Our seven year old is reading some of the easiest pieces ("Jolly Old Saint Nicholas" and "We Three Kings"), and a little augmentation from siblings - easy with the duets in this book - makes his efforts sound very polished.
If you are looking for some new music to add to your Christmas repertoire, this book would be a wonderful, affordable choice.