GMAT Sentence Correction (SC) | Except for a concert performance that the composer himself

Except for a concert performance that the composer himself staged in 1911, Scott Joplin’s ragtime opera Treemonisha was not produced until 1972, sixty-one years after its completion.

Issue: Meaning | Verb Form

Analysis:
1. The sentence is intends to say that "the performance that the composer staged in 1911" was the only one except "Treemonisha" production in 1972.

I have highlighted the issues in option below:

(A)Except for a concert performance that the composer himself
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