Imagination Land

Imagination Land (Instrumental) is included in "Inside Out Soundtrack". Light, to match all the cartoons for very young kids. The same little listeners will love this composition really (they still do not know how to feel nostalgia), but for the rest of listeners it will just lift the spirits with a simultaneous reminder of how they were small and what the world was a simple all around you – everything was black and white and was subdivided only in the simplest emotions – joy and sadness.

Sources:

Michael Giacchino - Wikipedia