"Tik Tok" singer says she entered rehab "to learn to love myself again"
The artist addressed the growing normality of female singers relying on their bodies, rather than their voices, to get attention
The cable network announces "Ke$ha: My Crazy Beautiful Life" will be back in October
A Miley Cyrus documentary is also in the works at MTV
Evan Rachel Wood and Ke$ha are among the improbable interpreters who score in a 76-song Dylan tribute