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　　Austin, a musician and singer and Ally, a songwriter, are paired up unexpectedly but rely on their two best friends, Trish and Dex, to keep things together. Austin and Dex decide to record one of Ally's songs without her knowing and post it on the internet. Austin becomes an instant sensation. Austin begs Ally to expose herself as the writer and write him another song, but inst... (展开全部)