 The song received generally positive reviews from music critics ; some commented on how it deviated from her usual material at the time and how effective the message was . " I Miss You " appeared on two United States charts : it peaked at number nine on Bubbling Under Hot 100 Singles , an extension of the Billboard Hot 100 chart , and at number ninety @-@ two on the defunct Pop 100 . Cyrus performed the song on acoustic guitar as an encore at several stops on her first headlining concert tour , the Best of Both Worlds Tour ( 2007 – 08 ) . 
