Very well done.
I'd recommend that Midnight had Kalimba running on a 1-5-3-5 eighth note feel (maybe reletive to fit the chord progression) as well as Shaker eighth notes, accenting the +'s of every note. Perhaps a very short tambourine shake on every 3rd beat of every 4 bars.
Tambourine could be added to Exploring too. Do not underestimate it.