The 54-year-old music mogul appeared in court on Tuesday, where he pleaded not guilty to three felony counts, according to CNN.
Kangethe had returned to Kenya last year after allegedly killing Mbitu.
Milimani chief magistrate Susan Shitubi granted Aoko an alternative personal bond of Sh200,000, as the prosecution did not provide sufficient reasons to deny her bail before trial.
The decision to release businessman Yagnesh Devani on bail followed a pre-bail report submitted by a probation officer, which recommended his release pending trial.
The leaders of Tanzania's main opposition party Chadema have been released on bail, a party spokesman said on Tuesday, after they were detained ahead of a youth day rally.
The 15 officers have written to the Deputy Registrar of the Kiambu High Court demanding answers on the delayed ruling on their bail application.
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