Some context: Deep Purple are an English rock band formed in Hertford in 1968. The band is considered to be among the pioneers of heavy metal and modern hard rock, although their musical approach changed over the years. Originally formed as a progressive rock band, the band shifted to a heavier sound in 1970. Deep Purple, together with Led Zeppelin and Black Sabbath, have been referred to as the "unholy trinity of British hard rock and heavy metal in the early to mid-seventies".
In 1967, former Searchers drummer Chris Curtis contacted London businessman Tony Edwards, in the hope that he would manage a new group he was putting together, to be called Roundabout. Curtis' vision was a "supergroup" where the band members would get on and off, like a musical roundabout. Impressed with the plan, Edwards agreed to finance the venture with his two business partners John Coletta and Ron Hire, who comprised Hire-Edwards-Coletta Enterprises (HEC).  The first recruit to the band was the classically trained Hammond organ player Jon Lord, Curtis' flatmate who had most notably played with the Artwoods (led by Art Wood, brother of future Rolling Stones guitarist Ronnie Wood, and including Keef Hartley). Lord was then performing in a backing band for the vocal group The Flower Pot Men (formerly known as the Ivy League), along with bassist Nick Simper and drummer Carlo Little. Simper had previously been in Johnny Kidd and the Pirates and survived the 1966 car crash that killed Kidd. Lord put the two on alert that he'd been recruited for the Roundabout project, after which Simper and Little suggested guitarist Ritchie Blackmore, whom Lord had never met. Simper had known Blackmore since the early 1960s when his first band, the Renegades, debuted around the same time as one of Blackmore's early bands, the Dominators.  HEC persuaded Blackmore to return from Hamburg to audition for the new group. Blackmore was making a name for himself as a studio session guitarist, and had also been a member of the Outlaws, Screaming Lord Sutch, and Neil Christian. Curtis' erratic behaviour and lifestyle, fuelled by LSD use, caused a sudden disinterest in the project he had started, forcing HEC to dismiss him from Roundabout. But HEC was now intrigued with the possibilities Lord and Blackmore brought, while Lord and Blackmore were also keen to continue. The two carried on, recruiting additional members and keeping Tony Edwards as their manager. Lord convinced Simper to join for good, but left Carlo Little behind in favour of drummer Bobby Woodman.  In March 1968, Lord, Blackmore, Simper and Woodman moved into Deeves Hall, a country house in South Mimms, Hertfordshire. The band would live, write and rehearse at Deeves Hall, which was fully kitted out with the latest Marshall amplification. According to Simper, "dozens" of singers were auditioned (including Rod Stewart and Woodman's friend Dave Curtiss)until the group heard Rod Evans of the club band The Maze, and thought his voice fit their style well. Tagging along with Evans was his band's drummer, Ian Paice. Blackmore had seen Paice on tour with The Maze in Germany in 1966, and had been impressed by the 18-year-old's drumming. The band hastily arranged an audition for Paice, given that Woodman was vocally unhappy with the direction of the band's music. Both Paice and Evans won their respective jobs, and the line-up was complete.  During a brief tour of Denmark and Sweden in April, in which they were still billed as Roundabout, Blackmore suggested a new name: "Deep Purple", named after his grandmother's favourite song. The group had resolved to choose a name after everyone had posted one on a board in rehearsal. Second to Deep Purple was "Concrete God", which the band thought was too harsh to take on.
Did Blackmore stay with the band?
A: But HEC was now intrigued with the possibilities Lord and Blackmore brought, while Lord and Blackmore were also keen to continue.

Some context: Therapy? are an alternative metal band from Northern Ireland. The band was formed in 1989 by guitarist-vocalist Andy Cairns from Ballyclare and drummer-vocalist Fyfe Ewing from Larne, Northern Ireland. The band initially recorded their first demo with Cairns filling in on bass guitar. To complete the lineup, the band recruited Larne bassist Michael McKeegan.
While attending a charity gig at the Jordanstown Polytechnic in early 1989, Andy Cairns noticed Fyfe Ewing playing drums in a punk covers band. The two spoke afterwards and agreed to meet for rehearsal in Fyfe's house in Larne with Andy playing a small practice amp and Fyfe playing his kit with brushes. In the summer they recorded a four track demo tape (Thirty Seconds of Silence) with Andy playing a bass guitar borrowed from Fyfe's classmate Michael McKeegan. Deciding to play live, they recruited McKeegan and played their debut gig at the Belfast Art College supporting Decadence Within on 20 August 1989. They followed this up with another four track demo tape (Meat Abstract). Their sound was becoming highly influenced by artists of the indie rock movement such as The Jesus Lizard, Big Black, and The Membranes as well as new beat disco acts such as Belgian outfit Erotic Dissidents.  Therapy? released its first single, called Meat Abstract in July 1990. The single was limited to 1000 copies, and released on the bands' own Multifuckinational Records. During the summer of that year, the band made its first tour through the United Kingdom with The Beyond, catching the attention of influential DJ John Peel along the way. The band's early years followed the familiar pattern of hard graft on the local alternative music scene, with Cairns often putting in a full day at the Michelin tyre factory (where he worked as a quality controller), then speeding across Northern Ireland in order to make it to gigs. The band also took whatever support slot they could, opening for the likes of Loop, Ride, Teenage Fanclub, Inspiral Carpets, Tad, Fugazi and Ned's Atomic Dustbin. Therapy? quickly came to the attention of local music fans with their distinctively uncompromising style. Their use of guitar feedback as a "fourth instrument" and unconventional song structures, combined with a darkly original approach to lyrics and imaginative use of samples pulled from cult movies and obscure documentaries, led them to be spotted in 1990 by London-based independent label Wiiija Records. The move was helped by Lesley Rankine of Silverfish, who passed the band's first single on to Gary Walker of Wiiija.  The band's first album, July 1991's Babyteeth, and its January 1992 follow up, Pleasure Death, were successful enough to earn the band a major label deal with A&M Records. Both albums were underground successes, hitting number 1 in the UK Indie Charts. The attention led to support slots with both Babes In Toyland and Hole on their respective UK tours. A compilation of the two albums entitled Caucasian Psychosis was prepared for the North American market, and the band embarked on their first U.S. tour in October 1992.  Their debut A&M record, Nurse, made its way into UK's Top 40 Album Chart in November 1992, while lead single "Teethgrinder" became the band's first Top 40 single in both the UK and Ireland. The grunge revolution was in full swing, with US outfit Nirvana leading the way. Predictably, the media began to draw comparisons between the two bands. The heavy guitars and inventive drumming that was swiftly becoming Therapy?'s trademark led them more towards the grunge camp than away from it.
Was it successful?
A:
tour through the United Kingdom with The Beyond, catching the attention of influential DJ John Peel along the way.