Clue #1: Your services are no longer needed.
Clue #2: Today is the day.
Clue #2a: The time is up, no more waiting
Clue #3: Before the end.
Clue #3a: Penultimate.
Clue #4: Better Call Saul S04E01.
Clue #4a: A line from said episode appears... Sort of... In the song in question
Clue #5: The one who took the role of the one in the first clue is someone from the future or the past, depending on your timeline.
Clue #6: Unbeliever? No more
Clue #7: This song is still to be played live.
Clue #8: This song is a post-reunion song.
Clue #9: You got a pen?
Incorrect Guesses:
22 Acacia Avenue
Man On The Edge
Virus
The Fugitive
From Here To Eternity
The Clairvoyant
Seventh Son Of A Seventh Son
Senjutsu
Twilight Zone
Darkest Hour
Death Of The Celts
Holy Smoke
Revelations
Paschendale
The Legacy
The Thin Line Between Love And Hate
No More Lies
For The Greater Good Of God
Sign Of The Cross
The Writing On The Wall
No Prayer For The Dying
Dream Of Mirrors
Days Of Future Past
Justice Of The Peace
The Ides Of March