Welcome Back, Walker (Instrumental) is included in "Tomorrowland Soundtrack". Cute and cozy. This melody, which is a bit sad, at the same time calls on new discoveries, large and small. Maybe, at least, to explore the varieties of moss that grows on your back yard. Or to cut a lawn to breathe later the odor of mown grass.
Reference: 'Tomorrowland' Soundtrack Details - Film Music Reporter