Sindarin for royal musician or royal piper?

ar- prefix would be royal.

thibin is a piper, i.e., someone who plays a flute to make music with.(Instead of that other contraption that's used to simulate someone stepping on a cat's tale, but I digress. :) )

So, would a royal piper be arthibin? Or would there be some kind of mutation. (That's something I just haven't been able to wrap my head around. :( )

I would prefer to base the results on "royal musician", but I can't find a Sindarin word for musician.

You could use Lim(m)aethor Arnen or Arlim(m)aethor if we use the Q. lindimaitar n. “composer, musician”

• An unusual feature of Sindarin is that an isolated medial m is pronounced as a single [m], even though it is written as mm in cases where otherwise the stress might be in doubt, as in: o Galadhremmen [ga-ladh-RE-men] o Rammas [RA-mas] o Turamarth [tu-RA-marth]

P.S. Have not forgotten about you but I do not feel confident with the rest of the Poem. I think I might have to leave that for one who is more skilled.

As much as I would love complete versions of each poem, they aren't necessary for the book illustration I have in mind. Even half-poem fragments will be awesome!

How about linnas (song) and one of the sindarin words for maker?

Humm.... Ceredir Linnais "Maker of Songs"

Then, Ceredir Linnais Arnen or Arceredir Linnais for a Royal Maker of Songs?

(I.e., someone appointed by the king to that role.)

Ceredir Arnen Linnais if using ar(a) it would be Argeredir Linnais