Music producer Kenny Gamble is among a string of witnesses pledging to mentor Meek Mill as the Philadelphia rapper tries to stay out of jail.
Gamble, who co-wrote a slew of 1970s R&B hits, says it would do no good for the 28-year-old to return to prison over parole violations.
Judge Genece Brinkley believes the performer born Robert Williams has been "thumbing his nose" at her.
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Prosecutors say he routinely fails to stick to his stated travel plans and recently submitted a suspicious drug test. The parole stems from a 2009 drug and gun case.
Defense witnesses blame the travel lapses on the chaos of the music industry.
The rapper is expected to testify Thursday afternoon.
He has a famous supporter in court: girlfriend Nicki Minaj. The singer says she wants to bring more structure to his life.