Check out "Exploring Ensemble Playing for beginner piano and strings" by Cathy Applegate and Winnie Choy. It is now being sold from the Australian Music Centre under Cathy's name. This collection is great for people in beginner piano grades wanting to try out ensembles and play pieces with a variety of styles and characters. You can listen to my tracks in this collection on SoundCloud - e.g. Dreamlike, Star Gaze, Intrigue, Magical Little Creatures, Rough, Dancing Raindrops.
Here is the link to purchase: