1. No clue :/
2. Flash Man (Mega Man 2)
3. Pollyanna (?) (Mother 2)
4. Evangelion Theme
5. No clue :/
6. Cloudy Court Galaxy (SMG2)
7. Menu Theme (Brain Age 2)
8. Hoenn Contest Theme
9. You Will Know Our Names (Xenoblade Chronicles)
10. No clue :/ (Sounds like Studio Ghibli, though.)
"Just for comparison Uncharted 4 was 20x bigger than Splatoon 2. This shows the huge difference between Sony's first-party games and Nintendo's first-party games."