I was sitting at the George Sherman Union the other day when an older gentleman approached me and asked about the sticker of actress Lauren Bacall pasted on the back of my laptop. After bonding over our shared love of Jean Arthur comedies from the 1930s, the man posed a question: How can we get more kids your age to watch old movies?

Armed with a cello and the untethered voice of an angel, Icelandic Chinese singer-songwriter Laufey enthralled audiences at The Sinclair in Cambridge Tuesday night, with hits detailing bad dates, heartbreaks and lifelong friendships.