Watch Three-Fifths Of IRON MAIDEN's Original Lineup Perform In London

Video footage of several former IRON MAIDEN members — original singer Paul Mario Day (1975 - 1976),guitarist Terry Wapram (1977 - 1978),drummer Doug Sampson (1977 - 1979),guitarist Terry Rance (1975 - 1976) and guitarist Dave Sullivan (1975 - 1976) — performing on January 20 at the legendary pub Cart & Horses in London, England can be seen below.

Last month, four-fifths of the original IRON MAIDEN lineup reunited for the first time in 42 years. Bassist Steve Harris, who formed IRON MAIDEN on Christmas day in 1975, was photographed with Paul Mario Day, and Sullivan and Rance. Missing from the photo op was drummer Ron "Rebel" Matthews.

Day's latest face-to-face meeting with Harris came four years after the singer suggested in an online post that he had co-written the MAIDEN song "Strange World" but was never credited for his contributions.

Day wrote at the time: "This is my opinion. When I sang in IRON MAIDEN, it was a new pub band and nobody wanted to see or hear them. We were all nobodys all trying to make the best music we could and fighting for an audience.

"In 1976, photos/recording were next to impossible to have if you were poor boys from East London, so I cannot prove I wrote the words and melody for 'Strange World'.

"As for before the time of albums and recording deals, I would say it was creative theft, not deliberate, as probably I would have done the same thing myself to keep it clean and simple. I think, however, if it made me a mega amount of money in the future, I would have done the right thing and [made] amends. As back then we were all pulling for the same side and it still hurts to think the first-ever song I ever composed was on a big-selling album and nobody knows it was me. Not to mention how I scrape to earn a living while Mr. Harris is living like a god!"

Due to his lack of stage presence, Day was replaced in MAIDEN by Dennis Wilcock. Day went on to front SWEET and MORE while Terry Rance still plays with AIRFORCE, which features former IRON MAIDEN drummer Doug Sampson.

MAIDEN's first demo recording, "Soundhouse Tapes", featured Harris, singer Paul Di'Anno, guitarist Dave Murray and Sampson. It eventually landed MAIDEN a record deal with EMI in 1980. The band's self-titled debut album brought about a new lineup with the addition of Clive Burr to replace Sampson and Dennis Stratton on guitar.

"Wrathchild" soundcheck with Paul Mario Day, Terry Wapram and BUFFALO FISH:

"Wrathchild" live first time with Paul Mario Day, Terry Wapram and BUFFALO FISH:

Whole AIRFORCE set with Paul Mario Day and Doug Sampson:

"Prowler" with Marius Danielsen, Terry Wapram and BUFFALO FISH:

"Iron Maiden" with Paul Mario Day, Terry Wapram and BUFFALO FISH:

Paul Mario Day, Terry Wapram, Terry Rance and Dave Sullivan on stage together with BUFFALO FISH: