Three CD box set of Chick Corea’s piano music, reminding us that the distinguished solo piano tradition at ECM started in 1971 with Corea’s spontaneously-recorded volumes of improvisations and jazz tunes (all by Chick save for Monk’s “Trinkle, Tinkle” and Wayne Shorter’s “Masqualero”). The “Children’s Songs”, recorded in 1983, are finely-honed yet playful solo piano miniatures that can be related to the tradition of Bartók’s “Mikrokosmos” and Kurtág’s “Játékok”. Violinist Ida Kavafian and cellist Fred Sherry join Chick for an “Addendum”. Booklet includes liner notes by Chick Corea and Neil Tesser, plus archive photos.