 According to Billboard , In the Zone marks a musical departure for Spears . Instead of traditional pop , the album is darker and more dance @-@ oriented . Spears talked about the overall sound of the album with Rolling Stone , saying , " I 'd describe it as trance @-@ y , kind of vibe record — something you could listen to that 's no so song @-@ structured [ ... ] Of course I 'm not doing ' ... Baby One More Time ' and those massive hits anymore . I think this record is where I am at right now in my life . It 's sensual , it 's sexual . I 'm probably writing about that subconsciously because I don 't have that right now . " Amy Schriefer of NPR stated the album is a mix of dance , house , crunk , Diwali beats and hip hop . According to William Shaw of Blender , the main theme of In the Zone is " Spears ’ s awakening to her sexuality as a single woman . " The first single from the album , " Me Against the Music " , features Madonna , but was constructed as a duet after she was added to the track . Spears and Madonna trade lines during the verses , and Madonna sings solo in the bridge . The instrumentation in the song includes influences of hip hop and funk guitars . The song 's lyrics feature Spears and Madonna singing of the pleasures of letting go on the dancefloor , in " I 'm up against the speaker / Trying to take on the music / It 's like a competition " . The second song , " I Got That ( Boom Boom ) " , is an Atlanta @-@ style hip hop track featuring the Ying Yang Twins . 
