Every year Elīna Garanča and Karel Mark Chichon invite the greatest talents of the world of Opera to sing with them as their guests at the open air concerts. For some of these guests, such as Valentina Nafonita, Bryan Hymel, Angel Joy Blue or Joyce El-Khoury these guest appearances awere followed by formative steps in their singing careers. During „Classic under stars“ the audience experiences in addition to the extraordinary voice and star presence of Elīna Garanča herself , formative moments in the career paths of rising opera stars.

In 2017 more than 120 artists were on stage in the context of "Klassik unter Sternen" together with Elīna Garanča, among others in the grande finale, Act 2 of Aida. The Latvian Mezzosopranist inviteded several international performances in July. The concert was impressive: Kammersängerin and soprano Barbara Frittoli as well as star tenor Alfred Kim, the tenors Rodolfo Giugliani, Martin Mikuš, Rihards Mačanovskis, the choir of the Slovak National Theater and the symphony orchestra of the Viennese Volksoper presented a jubilee program compiled by artistic director Karel Mark Chichon:

For example, there was an Aida focus, where Garanča was on stage for the first time in the role of Amneris, Aidas Rival. In addition to Verdis Aida famous and popular arias were performed: From Carmen, La Traviata, Cavalleria Rusticana, Turandot, Otello, Don Carlo to Andrea Chenier. The crowning conclusion was a wonderful medley of well-known melodies performed by Garanča and all her guests, from Tonight to Caminito, Matinatta, La vie en rose, Vienna and Vienna, only you alone, to O sole mio - a Medley Famous three tenors first sung in 1990 with a legendary audience success in the Caracalla Spa in Rome.