A warm-up act, opening act, support act, or supporting act is an entertainment act
(musical, comedic, or otherwise), that performs at a concert before the featured act, or "headliner"
. Rarely, an opening act may perform again at the end of the event, or perform with the featured act after both have had a set to themselves.
The opening act's performance serves to "warm up" the audience, making it appropriately excited and enthusiastic for the headliner.
In rock music
, the opening act will usually be an up-and-coming group
with a smaller following than the featured artist. On long concert tour
s, different opening acts may be used for different legs of the tour.
In comedy, a warm-up comedian or crowd warmer is a stand-up comedian
who performs at a comedy club
or before the filming of a television comedy
in front of a studio audience
More rarely, a comedian will open for a music concert. Their role is to make the audience feel integral to the show and encourage reactions during the show.
[ They usually work alone and perform a comedy routine while also possibly explaining aspects of the show. In a television recording, they will also perform during commercial breaks.] [ Some warm-up routines before talk shows involve giving prizes to audience members.] The use of warm-ups in comedy dates back before television to radio shows.
In sports, an undercard is a preliminary bout or race between lesser known competitors, at a boxing, professional wrestling, horse racing, auto racing, or other sports event.
*Curtain raiser (drama)