Answer
No, you would not enjoy the concert.
Work Step by Step
If the speed of sound were significantly different for sounds of different frequencies, then the farther you sit from the orchestra, the more scrambled the music will be. Higher-frequency notes (say, played by a piccolo) would reach you at different times compared to lower-frequency notes (say, from the bass drum).
When wave speed depends on frequency, the phenomenon is known as dispersion. Sound waves in air do not exhibit much dispersion.
