supportact
nounUK /ˈsʌpɔːt ækt/
US /ˈsʌpɔːrt ækt/
A support act is a band or singer who plays first before the main show.
The support act played for thirty minutes before the famous band came on stage.
OTHER MEANINGS
2. A person or group that performs first at a comedy or theatre event.
The support act warmed up the crowd with a few jokes.
3. In sports, a secondary performance or event that helps the main one.
The youth match served as a support act to the big final.
4. Something done to help another activity succeed.
The charity run was a support act for the hospital fundraiser.