The birds aren't the only ones singing as UNC's a cappella season kicks into high gear.
Many groups are presenting their marquee concerts as the year draws to a close.
"Spring is definitely the busier semester for us," said Cassie Criswell, concert manager for the Loreleis.
The group, UNC's oldest female a cappella organization, presented its spring concert Sunday in Memorial Hall.
The group used its first appearance in the hall since the renovations to present fans with new material.
The concert also served as the platform for the release of the group's latest album, Downstairs.
"We're really excited about it," Criswell said. "It's a new sound for us - we kind of took a chance."
The University's all-male a capella groups are in full swing as well. The Clef Hangers are scheduled to perform an annual spring concert April 22 in Memorial Hall.
"We keep old favorites, but for spring, we always add at least five or so new songs," said Daniel David, former alumni coordinator for the group and an active member.