The orchestra came to stage

[Bassim]

I am wondering if my sentences are grammatically correct.

The orchestra came to stage to rapturous applause. When the first notes of Mahler's music floated through the hall, the audience seemed to be taken to another planet, away from mundane worries and problems.

 

[Skrej]

It should be 'came on stage'.

That being said, orchestras don't generally come on stage, due to their size. They're usually already seated, then a curtain and/or the main lights are raised. Then the concert master (typically the first violinist) comes on stage to applause, and then tunes the orchestra. The concert master then takes a seat, and the conductor comes on stage to further applause. At that point, the entire orchestra sometimes stands, to be seated at the conductor's direction.

If there's a special guest performer, then they'll sometimes be the concertmaster, or they may walk on stage with the conductor when it's time for their piece. The conductor typically exits and reenters the stage multiple times during a concert, between pieces.

It's all very ritualistic, with minor variances in the rituals between conductors and orchestras.

Edit: My remarks refer to the rituals of a classical music performance.

 

[Phaedrus]

. . . the audience seemed to be taken to another planet . . . .

That sounds too literal to me. I recommend:

". . . the audience felt transported to another planet . . . ."

 

[Rover_KE]

I've always known him/her as the leader.

 

[GoesStation]

Each section has a first chair. The first chair of the first violin section is, traditionally, the concert master. I don't know whether there's a gender-neutral term for this position.