You might see any of these five closely related plants flowering in a Bay Area garden right now. Four of them are most likely there for the tasty vegetables they produce; the fifth is more likely to be an unwanted weed, unless you're in a poisoner's garden. What are these plants and which one produces a toxic fruit?
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Answer:
Oboe and theremin. The excerpt is from MartinΕ―'s Fantasy for String Quartet, Oboe, Theremin, and Piano.
Cheers to good listeners Maddyπ, Charlieπ, Readeπ, Hazel, Atticus, Anna J., Jessica, Josh M., and Dr. Yetman! (The π is for those who identified both instruments.)