97. 'Best Day Of My Life' - American Authors
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2014's Top 100 BIGGEST iTunes Songs Revealed
4. 97. 'Best Day Of My Life' - American Authors
'Best Day Of My Life' comes from the Indie Rock band's debut album, 'Oh What A Life' and the catchy tune was soon shaped up to be the soundtrack to a host of adverts, including Nissan and Hyundai.