I've been listening to some of Motoi Sakuraba's best music, and while it is awesome he has a tendency to reuse given melodies and instruments. Every one of his RPG compositions has a counterpart in another game.
Compare the first 10-20s or so of each of these:
Mario Golf Ring Shot: http://www.youtube.com/watch?v=5TNdHbXGyII
ToS "Decision": http://www.youtube.com/watch?v=h7bI-Vl8LpY
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Mario Tennis Tournament Finals: http://www.youtube.com/watch?v=Y8k-kRMQN3Q
Mario Tennis Ring Shot: http://www.youtube.com/watch?v=KaszDBPmOkw
This song has the same feel as the above:
ToS "Like a Glint of Light": http://www.youtube.com/watch?v=DFWadiZkA_8
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Baiten Kaitos "The True Mirror": http://www.youtube.com/watch?v=DNtWj4bStOY
Eternal Sonata "Leap the Precipice": http://www.youtube.com/watch?v=TM3BIOvEJSw
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Eternal Sonata Boss Battle: http://www.youtube.com/watch?v=tWO6Q0YAmBA
Mario Tennis Tournament: http://www.youtube.com/watch?v=_O0BRLEpZ-I
Bonus: Compare 0:37 to 0:42 of ES with the first 8 seconds of this: http://www.youtube.com/watch?v=US7R4gfM2wc
EDIT: Whoops, transposed the a and u in his name in the title...
