Iron Maiden released their self-titled album in 1980, which debuted at No. 4 in the UK Albums Chart. In addition to the title track (a live version of which would be one of the first music videos aired on MTV), the album includes other early favourites such as "Running Free", "Transylvania", "Phantom of the Opera", and "Sanctuary" – which was not on the original UK release, but appeared on the US version and subsequent remasters. The band embarked on a headline tour of the UK, before opening for Kiss on their 1980 Unmasked Tour's European leg as well as supporting Judas Priest on select dates. Iron Maiden also appeared, to much acclaim, at the Reading Festival 1980. They were second to top of the bill on the Saturday, with UFO headlining. After the Kiss tour, Dennis Stratton was dismissed from the band as a result of creative and personal differences, and was replaced by Adrian Smith in October 1980.