As each group is a separate tournament, there's no real need to wait for the previous poll to finish before starting the next one, so let's go right ahead.
The first round of Group C matches are as follows:
Song of Unborn v Ancestral
Vermillioncore v The Raven That Refused to Sing
No Twilight Within the Courts of the Sun v Postcard
Hand Cannot Erase v Perfect Life
Twilight Coda v Only Child
Vote for the song you want to win each match. Songs will receive 3 points for a win, 1 point for a tie and 0 points for a loss. Voting is open for 24 hours. And check your ballots carefully before submitting, lest you accidentally vote for "Next Match Below". Steven Wilson hasn't released a song with that title yet.