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DU acapella group Idiosingcrasies performed Saturday at Up ‘Til Dawn, a fundraiser for cancer research. The group entertained the crowd with a compilation of songs, including “For the Longest Time,” “Lean on Me,” and Dave Matthew’s “Crash into Me” in the Tower’s Lounge. Groupmembers include: Sean Martin, Marianne Morgan, Matt MacCarthy, Sara Shvartzman, Nicole Saint, Heather McWilliams, Nick McCart, Andrew Hoag, Alison Geisse, Claire Olsofka, Nicole Tanner, Bobby Thompson and Rachel Osherow.