Liberal Democrat MP Norman Baker has stepped down from his role as Home Office minister to spend more time on his band, his family and his constituents.
His fractious relationship with Home Secretary Theresa May also played a large part in his decision.
ITV News Political Editor Tom Bradby reports:
The incoming Home Office minister Lynne Featherstone has said she is happy with her appointment as Norman Baker's replacement and is looking forward to resuming her work on women's rights, including bringing an end to female genital mutilation.
Lynne Featherstone is to replace Norman Baker as Liberal Democrat minister at the Home Office, Nick Clegg has announced.
The MP for Hornsey and Wood Green was appointed Home Office junior minister for equality in 2012. Two years later she became junior minister for international development.
She has also been Lib Dem spokesman for youth equality and was one of the first politicians to push the same-sex marriage bill through parliament.
Liberal Democrat MP Norman Baker, who has resigned as Home Office minister, says dealing with Home Secretary Theresa May was a "constant battle" and relations in the department were "disappointing".
Mr Baker denied claims that he thought he was the same ministerial rank as Mrs May but accused her of treating the department as if it was part of a Conservative government and not a coalition.
He added that he needed a break from ministerial office to spend more time with his family and on outside interests.
Former Tory minister Damien Green has described Norman Baker as a "natural lone wolf, not a natural team player".
He said Baker did not like the fact he had to work under Home Secretary Theresa May and wanted to clear everything himself.
"I think he maybe he had unrealistic expectations of what his job was", Green added.
One of the reasons Lib Dem Home Secretary Norman Baker stepped down is to concentrate on his passion for music.
The former minister is in a band called The Reform Club, for which he is "lead singer and lyricist", and even released a pop single Piccadilly Circus last year.
In his resignation letter to Lib Dem leader Nick Clegg, Baker said his time as minister had "squeezed the time available for my family and outside interests, including my music".
He will still continue in his role as MP for Lewes.
Here is the video for The Reform Club's single Piccadilly Circus:
Former Tory former Damian Green has accused Norman Baker of trying to act as if he had the same ministerial rank as Home Secretary Theresa May.
The ex-Home Office minister told BBC's Radio 4 Today programme: "Norman's problem was he came in ... he gave an interview to his local paper saying 'I'm the Lib Dem home secretary'.
"He regarded himself as being on a par with the Home Secretary and asked for papers from other ministers, he wanted to check what everyone else was doing.
"The world doesn't work like that. If you are a minister of state, in the end you work for the Secretary of State in that department."
Nick Clegg has said he will announce Norman Baker's replacement shortly after calling him an "outstanding" minister.
Labour have claimed the resignation of Norman Baker shows Theresa May is "losing control" of the Home Office.
Shadow Home Office minister Diana Johnson said: