Triforce of Inspiration Metapuzzle

by Noah Snyder and the metapuzzle committee

The relevant puzzle answers are the following:

THE FIRST NOEL
LAST SONNET
FOUR QUARTETS
FOUR ROOMS
THE RISE AND FALL OF THE THIRD REICH
OCTAVIA
KEPLER'S THIRD LAW
KEGELSTATT TRIO
PAS DE DEUX

Each of these is the title of a creative work of some kind. Creative works, of course, are inspired by the nine muses, and as it happens each of these works would have been inspired by a specific one of the nine muses. Extract a specific letter from each muse's name as clued by the title of the corresponding work:

THE FIRST NOEL:	                        1 / sacred music: Polyhymnia --> P
LAST SONNET:                         last / lyric poetry: eratO --> O
FOUR QUARTETS:                          4 / epic poetry:  calLiope --> L
FOUR ROOMS:                             4 / comedy:       thaLia --> L
THE RISE AND FALL OF THE THIRD REICH: 	3 / history:      clIo --> I
OCTAVIA:                                8 / tragedy:      melpomeNe --> N
KEPLER'S THIRD LAW:                     3 / astronomy:    urAnia --> A
KEGELSTATT TRIO:                        3 / music:        euTerpe --> T
PAS DE DEUX:                            2 / dance:        tErpsichore --> E

This spells POLLINATE, the meta answer.