Strangely enough (although using the words Frank Zappa and strange together is itself some sort of oxymoron ),Try also Frank Zappa's Francesco Zappa album. It's cracked up to be Baroque music realised on a synclavier. I've no idea if it is genuine baroque music but if not, FZ is a genius for composing it.
If that comes across well, try the Switched On Bach LPs by Walter Carlos - real JSB stuff realised on Moog synthesisers.
The ultimate in crossover would be the Jaques Loussier Play Bach LPs
Anyway I would recommend either Frank Zappa's 200 Motels or one of his two LP's of his works performed by the LSO.Frank Zappa (1940–1993) found out about him and performed Francesco Zappa's Opus 1 trios and Opus 4 sonatas on a digital synthesizer called the Synclavier. The recordings were released on the album Francesco Zappa in 1984. Frank Zappa described the album as "His (Francesco Zappa's) First Digital Recording in over 200 Years". While assumed by many to have been related, Frank Zappa stated in The Real Frank Zappa Book that in fact they were not.
But today I'll post the original version of Lumpy Gravy - which was Frank first large scale orchestral release from 1967, which was also available for a few weeks after its release until it was pulled from selves over a contractual dispute- which was a shame and it ended up being cut up into the Lumpy Gravy that was finally released as the music concrete LP also called Lumpy Gravy which is confusing, this original Lumpy Gravy version didn't not get released until 2018.......... https://en.wikipedia.org/wiki/Lumpy_Gravy