Clue 1: Recycling lyrics
Clue 2:
Clue 3: Neither love nor hate
Clue 4:
Clue 5: Recycling songtitles
Clue 6: In the lyrics we can find the name of a band and the name of an album of another band. To thicken the plot, the latter band covered a song which is the name of the first band. To thicken the plot even further, both bands covered an Iron Maiden song.
Clue 7:
Clue 8: In the lyrics we can find the name of a third band. To thicken the plot, we can find a songtitle of this band in the lyrics as well. To thicken the plot even further, one of the two bands from Clue 6 covered a song by the band from Clue 8.
Clue 9: Apparently they´re no strangers
Clue 10:
Incorrect guesses: Back In The Village, Bring Your Daughter...To The Slaughter, Dream Of Mirrors, Drifter, Hell On Earth, Holy Smoke, If Eternity Should Fail, Infinite Dreams, Invaders, Invasion, Iron Maiden, Juanita, Killers, Lost In A Lost World, Mother Russia, Revelations, Run Silent Run Deep, Sanctuary, Satellite 15...The Final Frontier, Stranger In A Strange Land, The Angel And The Gambler, The Legacy, The Number Of The Beast, The Prisoner, The Reincarnation Of Benjamin Breeg, The Thin Line Between Love And Hate