Ok, it's BlackBart's turn.
Here are the clues explained:
Clue 1: This song's lyrics contain a phrase that is also the name of a successful 80s album by another metal band. This band’s debut album has a track one might think is a homage to Maiden.
"Tell No Tales", a 1987 album by glam/powermetallers T.N.T. Their first album, "Knights of the New Thunder", has a song about a psychopatic killer called "Eddie".
Clue 2: The opening track of a record often considered a classic by hard rock/metal fans (yet weaker than the records which preceded and followed it), has a name that will lead you to the Maiden song in question. A person that can be connected to the possible homage to Maiden in clue 1 has a writing credit on this track.
Motorhead's "Dead Men Tell No Tales", from the "Bomber" album. Eddie Clark has a writing credit on the song.
Clue 3: The location at which an often published photo of Iron Maiden was taken provides a link to the song - both its title and the lyrical content.
The early 1978(?) band photo outside the Blind Beggar pub in East London, featuring the line-up of Steve, Dennis Wilcock, Tony Moore, Tony Parsons and Thunderstick. The pub is infamous as it was the location of a murder carried out there by legendary East End gangster Ronnie Kray in the 1960s.
Clue 4: A band Maiden have shared stage with has an album-opening song with the same name, and even some of the same imagery in the lyrics, as the Maiden song in question.
Tygers of Pan Tang. "Gangland" is the opening track on their 1981 album "Spellbound".
Clue 5: The song has been covered by a band that a member of Maiden has performed with. This band has also been named as an inspiration for at least one of Maiden's records.
Dream Theater covered the entire Number of the Beast album. Bruce has performed with them. The band's demos mentioned by Bruce as an inspiration to leave the soggy sound of No Prayer for the Dying behind for the Fear of the Dark album.
Clue 6: (I'll throw in a bonus clue here) None of the guitar players on the Maiden song in question appears in the photo referred to in clue 3. The guitarists who play on the Maiden song in question have a musical link to the singer of the song in clue 2, a link that pre-dates Iron Maiden.
Murray/Smith. The first song Adrian played on guitar was Hawkwind's "Silver Machine", penned and sung by Lemmy. Dave taught him this tune.
Clue 7: The song is narrated in the present tense, but a part of it is in the past tense. The section of the lyrics in the past tense describes a change, and ends with a question.
The "once you were glad..." part.
Clue 8: The song is notable for a feature that is only shared with one other Maiden song.
Clive Burr has a writing credit, his only contribution in that area toghether with "Total Eclipse".
Clue 9: A rather unique feature of this song, is that a piece of it is missing on record.
There is one guitar solo missing, which the band somehow forgot to add. At the end of the solo, you'll hear a few bars of riffing with no solo on top, just before the last verse kicks in.
Clue 10: Some bits and pieces to wrap this one up… The song shares its name with a TV series. The lyrics use a metaphor that involves an animal. A band Maiden covered on a B-side had a manager who might make you think of the theme of the song in question. This manager can also be associated with a building in the photo in clue 3.
"Gangland" TV series. Rat in a trap. The band Stray (of "All In Your Mind" fame) had Charlie Kray, brother of the Kray twins, as manager in the 1970s.
Clue 11: The band in clue 1 shares its name with an AC/DC song. The band in clue 2 shares its name with a Motorhead song. And by the way, the song in question does not appear on an Iron Maiden single.
T.N.T. Motorhead (song).