After a short period of inactivity, Dickinson once again teamed up with Roy Z and Tribe of Gypsies to record his next album, "Accident of Birth"; "It was actually Roy that dragged me back into some assemblance, because he called up and he said, 'Listen, I've got some stuff and it's like a metal record.' And I wasn't thrilled, I wasn't really sure that I had anything to offer ... Then he played me some backing-tracks he'd done for what was to become "Accident of Birth" down the phone and I thought 'There is something there.'" Former Iron Maiden guitarist, Adrian Smith, was asked to guest on the record, but remained as a full-time member of Dickinson's solo outfit. The album marked a return to heavy metal for Dickinson, with Sputnikmusic remarking, "The album's heavy feel is very satisfying, and definitely fills that void left by Maiden during the 90's." The follow-up, "The Chemical Wedding", was a semi-concept album on alchemy, which drew inspiration from William Blake's writings; with some songs, such as "Book of Thel", having the same title as some of his poems, and the cover artwork featuring one of his paintings. The record was even more successful than its predecessor, with Sputnikmusic commenting, "Bruce had shattered all expectations to create an album that might even be better than the previous one." During "The Chemical Wedding"'s supporting tour, the live album, "Scream for Me Brazil" was recorded in São Paulo, after which Dickinson and Smith returned to Iron Maiden in February 1999.