Sixty-six: Number of young women who auditioned in 2005 for three vacancies in Tangled Up in Blue, an all-female a cappella singing group on the UW campus.
2,251: Seats in Overture Hall, which the all-male a cappella group The MadHatters has sold out for its annual spring concert three times.
Two: Other student a cappella groups — the all-male Fundamentally Sound, and the co-ed Redefined — that will join Tangled Up in Blue and The MadHatters at Union Theater Friday for a first-ever “A Cappella Showcase ” to benefit Madison charities.