 Barrowman is also featured on more than a dozen musical theatre recordings including cover tunes found on his 2007 album , Another Side , and 2008 's Music Music Music . Both albums accrued places on the UK Albums Chart , as did his self @-@ titled John Barrowman ( 2010 ) , which reached number 11 , his highest chart placing to date . Furthermore , Barrowman has published two memoirs and autobiographies , Anything Goes ( 2008 ) and I Am What I Am ( 2009 ) , with his sister Carole as co @-@ author . The siblings also teamed up to write a novel , Hollow Earth ( 2012 ) . The second book in the series , Bone Quill , has been released in the UK and was released in the US in July 2013 . 
