 Duff premiered " Beat of My Heart " as part of the set list of the Still Most Wanted Tour , which commenced on July 12 , 2005 in Los Angeles . She co @-@ hosted the 2006 edition of Dick Clark 's New Year 's Rockin ' Eve . A pre @-@ recorded performance of " Beat of My Heart " was played during the program . The event also featured a live performance from Times Square by Mariah Carey — the first in the show 's history . These live performances would become a regular feature during future editions of New Year 's Rockin ' Eve . Duff performed the song as part of the set list of the Dignity World Tour ( 2007 – 08 ) . 
