Three schoolboys have been arrested on suspicion of starting the fire which destroyed the former home of the Cadbury family in Birmingham.
Northfield Manor House was torched in an arson attack on Wednesday night.
The boys aged 12, 14 and 15 were questioned yesterday evening and have now been released on bail.
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Janet Ajao said in a statement: "I do not condone his actions nor support the beliefs he held that led to him committing this atrocity."
Sonia Bryce played 'Shape of You' at top volume and cause a "wholly unacceptable level of disturbance" according to a judge.
They will be joined by Duke Dumont and Disciples at this year's festival in Staffordshire.