Companion pieces are pieces with certain musical elements in common, so are good to learn concurrently.

Perhaps they're in the same key, or have the same chord progression, a similar form, a preponderance of a certain interval, or the same rhythm pattern used repeatedly, etc. Keyboard teachers who assign companion pieces have discovered the confidence building opportunities they present for students!

Here are 7 intermediate level companion pieces from the traditional piano repertoire (and short descriptions), all in the key of Eb major, that could be assigned along with America and Misty.