firstchair
nounUK /ˈfɜːst tʃeə/
US /ˈfɜːrst tʃer/
The first chair is the best seat in a group of musicians, like the leader's spot.
Mia practiced every day so she could earn first chair in the school orchestra.
OTHER MEANINGS
2. The leading position in a section of an orchestra or band.
He played first chair trumpet in the jazz band.
3. The most important or front seat in a meeting or class.
The teacher gave the visitor the first chair by the window.
4. A person who holds the top-ranked seat in a musical group.
As first chair, she tuned the orchestra before the show.