Berger broke his wrist during the Nittany Lions' 4-2 win over Michigan on Saturday.
The roughly one-hour show included cover songs by Taylor Swift, ABBA, and Lady Gaga.
The Wolverines' three-goal first period sunk the Nittany Lions' late comeback hopes.
"I want tough, competitive kids. I want kids that come here because they want to win."
The Nittany Lions were shut out in a series for the first time in program history this weekend, putting their NCAA Tournament hopes at serious risk.
The Golden Gophers' two early first-period goals doomed the Nittany Lions from the start.