7, (The Twittering Machine), based on the well-known painting by Paul Klee.
In Germany, Heinrich von Kleist's Amphitryon (1807) remains the most frequently performed version of the myth, with Kleist using Alkmene's inability to distinguish between Jupiter and her husband to explore metaphysical issues; Giselher Klebe wrote in 1961 his opera Alkmene based on this play.