Dozens of performers are warming up their vocal chords hoping to get a chance to play for a potential audience of more than eight million straphangers.

The Metropolitan Transportation Authority is holding its 25th annual auditions for the "Music Under New York" program today.

About 70 soloists and groups are expected to show off their talent before a panel of judges.

Among the diverse range of performers vying for a spot are an all-female mariachi band, a Latin gypsy fusion group, and a bluegrass trio.

The auditions run from 9 a.m. to 4 p.m. inside Grand Central Terminal's Vanderbilt Hall and are open to the public.