"perform together" is a valid and usable phrase in written English.
For example, you could use it in a sentence such as, "The two dancers gracefully performed together on stage."
They often perform together: in 2007, their performance at the Royal Opera House "had a seasoned ballet audience open-mouthed", according to the Observer's Luke Jennings.
At the end of each performance day, the limos would converge there, and musicians would emerge to perform together live.
Do you perform together often?
Father and son still perform together.
These friends often perform together and always generate sparks.
"We would eat, sleep and perform together every night".
Each will play individually; then they will perform together.
They still perform together, although they each have solo careers.
These impressive young musicians, who are married, perform together regularly.
(They'll also perform together at Mercury Lounge on March 17).
It will be launched in November, and the pair will perform together in Scotland this week.
