From Globemoon:
[1] In EVERY version that Miho sings, she says "samishii" (and "watashi") in these lines. But in Mikuni's version, she (accidently?) sings "sabishii" (and "atashi"). Thankfully, both words mean the same thing, and they even share the same kanji:
æ·‹ã—ã„ -- lonely, sad
ç§ -- I