The 30-year-old was jailed today for eight and a half years after giving a fatal dose of hallucinogenic 2-CP to girlfriend Louella Fletcher-Michie as they partied hours ahead of her 25th birthday.
Broughton filmed the daughter of Holby City star John Michie become "disturbed, agitated, and then seriously ill" and continued to record after her death, jurors heard.
The musician, known by his rapper name CEONRPG, was found guilty of her manslaughter and drug supply resulting in her death on September 11, 2017.
The Michies have branded him "evil", but at one point they shared a close relationship.
A surreal video for "Duracell", directed by Sam Michie and released just days before Louella's death, features Broughton dressed as a knight and crossing a rural bridge on horse and cart.
He is seen rapping as he clambers across woodland and waterfalls wearing a chainmail head covering.
At one point he wistfully holds on to a piece of material he finds in the river, belonging to a mysterious lady pictured in the film.
"She's a Duracell battery, she was ever ready, can't waste my day, thinking about that Jessie," he says in the song.
Broughton has produced a number of singles over his career, gaining some fame from his association with Grime artist Skepta, who also produced "Durcaell".
His song Excuse Me has more than half a million hits on Spotify, but there are signs that his popularity on YouTube waned after he was first implicated in Louella's death.
His late girlfriend's dad John Michie last week exploded at Broughton outside the courtroom, telling him: "You're evil".
Today he apologised for the first time in 18 months, saying through his lawyer: "I am sorry I did not do more to save Louella.
"Sorry for the suffering I have caused to everyone who loved her and I want to make things right'."
Source: Read Full Article