Where is Maglor?

[Inderjit S]

I suppose he just sang and sang until he either faded, was killed or died of sorrow, and he now dwells in Mandos.

 

[Maerbenn]

The death of Maglor is actually mentioned in the 'Lay of Leithian Recommenced' published in HoMe III: The Lays of Beleriand:

No other player has there been,
no other lips or fingers seen
so skilled, 'tis said in elven-lore,
save Maelor [Maglor] son of Fëanor,
forgotten harper, singer doomed,
who young when Laurelin yet bloomed
to endless lamentation passed
and in the tombless sea was cast.

 

[Triandra]

I read that book. I never knew that. I must have just passed over it. I guess we know now. I guess because of great sorrow held over the years, he just cast himself into the sea. He must be in the Halls of Mandos now.