Singer-guitarist Trace formed new group Ashland High earlier this year after his band Metro Station broke up.
The 22-year-old is working on Ashland High's debut album and is set to surprise fans with a special duet - a collaboration with his sister.
Trace wrote on his Twitter page: 'To all of u asking. Yes me and Miley r planning on doing a song for my new Ashland High album! The song is crazy! Miley will kill the chorus.'
Miley, 18, added: '@TraceCyrus Can't wait to get in the studio with you. This song is the friggennnn shizzzzzzzz.'