〈Lonely〉標誌著小賈斯汀和布蘭柯的第五度合作,但這是布蘭柯首度被認定是歌曲的首席藝術家。布蘭柯在過往歌曲中常被註記為詞曲作家或製作人,包括2010年的〈遊戲小情人(英语:Eenie Meenie)〉和〈我愛的人(英语:Somebody to Love (Justin Bieber song))〉、2015年的〈愛你自己〉和2016年的〈Cold Water(英语:Cold Water (song))〉。
錄影帶採用一鏡到底的拍攝方式。開頭特倫布雷獨自一人坐在更衣室,盯著鏡中的自己[48][49]。他穿著小賈斯汀職業生涯早期標誌性的紫色連帽衫、運動鞋、白色夾克和褲子,並頂著厚重的碗形瀏海[50][51][52][53][54][55][7]。布蘭柯隨後走進房間,通知他是時候上台了[56]。特倫布雷於是邊玩著曲棍球邊走出更衣室[57],然後在樓梯間稍作停歇。走到後台時,他先是舒展筋骨,並深吸一口氣,才鼓起勇氣站上舞台。他向空蕩蕩的觀眾席望去,呢喃著歌詞「I'm so lonely」(我好孤單)[58]。鏡頭緩緩拉遠,看到賈斯汀是唯一觀賞這場表演的人,他不發一語、面無表情地看向舞台[59][60][61][62]。
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