sentences:  From 2004 to 2013 he was Chief Conductor and Music Director of the Adelaide Symphony Orchestra and in 2014 was appointed Principal Guest Conductor and Artistic Advisor.The "Adelaide Review" wrote that Volmer's tenure as Chief Conductor saw the orchestra "improve out of all proportion and enter an unprecedented period of ascendancy".From 2004 to 2012, Volmer combined his Adelaide duties with the posts of music director and principal conductor of the Estonian National Opera in Tallinn.