Lostprophets singer Ian Watkins has been sentenced to 35 years in jail for 13 sex offences, including the attempted rape of a baby.
Two female co-defendants, aged 21 and 25, were also sentenced for various sex offences, with 'Mother A' given 14 years in jail and 'Mother B' given 17 years. They cannot be named for legal reasons.
Watkins shook uncontrollably as he was handed down his sentence at Cardiff Crown Court.
Justice Royce QC told Watkins and two female co-defendants, "what you three did plumbs new depths of depravity". He also described the singer as having a "dark and sinister" side.
He added that Watkins (36) was a "high risk of causing emotional and sexual harm to children and to women".
Earlier the former singer's lawyer told the court her client was a "kind and gentle man" and said there was no evidence of him "grooming" fans.
She said that coverage of his trial had been "sensationalist" because of who he is. Watkins was described by a prosecutor as a "determined and committed paedophile" when he pleaded guilty last month.
His lawyer said he was "ashamed and appalled" by what had happened and that the realisation of his acts made him "feel sick".
The court heard Watkins spoke with a female fan from prison the day after admitting two counts of attempted baby rape and said he was going to issue a statement when he was sentenced saying it had all been "mega lolz".
Watkins as seen in his mugshot
Christopher Clee QC, prosecuting, told the judge that Watkins had a conversation from Park Prison with a woman on November 27th. Watkins denied being a paedophile and expressed exasperation at the way people had reacted to his guilty pleas.
Using text-speak, he said "I'm going to put out a statement on the 18th just to say it was mega lolz. I do not know what everybody is getting so freaked out about."
The abuse is thought to be so widespread that investigating officers have since launched a nationwide appeal for other potential victims to come forward - and are pursuing new leads after receiving a flurry of calls.
South Wales Police is working with Homeland Security in the US, Interpol and police in Germany to identify if any other children have been abused by Watkins.
The UK Independent Police Complaints Commission (IPCC), which is investigating whether the force failed to act quickly enough after tip-offs about Watkins, has said it will now also look into South Yorkshire and Bedfordshire forces.
The IPCC said it is investigating the effectiveness of the three forces' responses to reports of abuse made to them between 2008 and 2012.
It said it was aware of a number of reports made to the South Wales Police from members of the public, Crimestoppers or other police forces before the paedophile's arrest in late 2012.
DCI Peter Doyle led the investigation.
