It's always fun to have someone to play a piano duet with, be it a sibling, a parent or child, a teacher or another pupil, or friend. Besides it being fun, it is a great way to improve one's sight reading ability, as there is someone else playing with you to keep you going. Also, it teaches unison playing, both hands in treble, both hands in bass, antiphonal singing/playing, modulation, syncopation, hemiola accompaniment, changing time-signatures, echo singing/playing, dissonance, chromaticism, resolution and more. Indeed, this book is a great tool as it contains well-loved Christian songs and is therefore great as a gift or Christmas gift. Songs include: One Door and Only One; Walking With Jesus; Oh, How I Love Jesus; Hallelujah, Praise Ye The Lord; Jesus, Saviour, Pilot Me; Seeking The Lost; I've Been Redeemed; Give Me Oil In My Lamp; Are We Downhearted?
 
See video on YouTube