I just read this and I had never connected the chorus to an oboe concerto …

Handel’s most popular oratorio was composed nine years before his death as a fundraiser for an orphanage in Dublin. He completed the piece in 30 days by using recycled material that he had composed years before.

“This was very common practice during the Baroque period,” said Doiron. “Only a few of the choruses and solos were original compositions specifically for the work. For example, the first chorus, ‘And the Glory of the Lord,’ was based on an oboe concerto composed 30 years prior.”