(humble) performing a song

(humble) to perform a song

(honorific) to give / (honorific) to do something for me/us

下さる: to give

(chiefly in the negative) so much; so often; so long; particularly; especially

Used when something comes to mind: to recall / Used to express agreement: yeah, of course

Expressing one's exclamation.

放火魔: (firefighting, criminology, psychology) pyromaniac

放火犯: (law, firefighting) arsonist

途方もない: absurd, extraordinary, unbelievable; immense, prodigious, enormous