Overture incorporating "God Save the King" at its climax). However, the overture "A Midsummer Night's Dream" (1826) by Felix Mendelssohn is generally regarded as the first concert overture (Temperley 2001). Mendelssohn's other contributions to this genre include his "Calm Sea and Prosperous Voyage" overture (1828), his overture "The Hebrides" (1830; also known as "Fingal's Cave") and the overtures "Die schöne Melusine" ("The Fair Melusine", 1834) and "Ruy Blas" (1839). Other notable early concert overtures were written by Hector Berlioz (e.g., "Les Francs juges" (1826), and "Le corsaire" (1828)). In the 1850s the concert overture began to be supplanted by the symphonic
Overture Networks with the launch of a new product, "Ensemble OSA". "Ensemble OSA" is an open architecture based on open API standards like OpenFlow and has three layers, which may include Overture-developed components, as well as those developed by service providers or third-party vendors. Overture followed this with the release of the Overture 6500, the first "Ensemble OSA"-ready platform and the inaugural product in its Open Service Delivery Family product line. In January 2016, Overture was acquired by ADVA Optical Networking in a $35 million purchase which was reported to involve "an additional $5 million conditional 'earn-out' payment". Overture's products were generally