Conversation so far:
When did the band, Deep Purple form?
The band, Deep Purple began forming in 1967.
How did the band, Deep Purple form?
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.
What did Tony Edwards then say to Chris Curtis?
Impressed with the plan, businessman Tony Edwards agreed to finance the venture with his two business partners John Coletta and Ron Hire, who comprised Hire-Edwards-Coletta Enterprises.
Who were the members of the new band, Roundabout?
The first recruit to the band was classically trained Hammond organ player Jon Lord, Chris Curtis' flatmate, who had most notably played with the Artwoods.
Were there any other members of the group, Roundabout besides Jon Lord?
Jon Lord was then performing in a backing band for the vocal group The Flower Pot Men, along with bassist Nick Simper and drummer Carlo Little whom he invited.
What happened next with Roundabout after Jon Lord invited Nick Simper and Carlo Little?
Jon Lord alerted Nick Simper and Carlo Little that he had been recruited for the Roundabout project, after which Simper and Little suggested Ritchie Blackmore.
What did Richard Hugh Blackmore play?
Richard Hugh Blackmore is an English guitarist.
Did Richard Hugh Blackmore stay with the band, Roundabout?
During an otherwise successful European tour, Blackmore walked out of the band in 1993, for good, after a show on 17 November in Helsinki, Finland.
What did the band, Roundabout do next after acquiring Ritchie Blackmore?
Jon Lord convinced Nick Simper to join for good, but left Carlo Little behind in favour of drummer Bobby Woodman.
Did the band, Roundabout stick together and perform?
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 the house.

Question: Who did they pick for a new singer?
Self-contained rewrite: Who did the band, Roundabout pick for a new singer?