Clara Wieck Schumann's "Forward" was written for a/an?

It is part of the

"Myrthen" Lieder (song cycle) for piano and soprano voice, Opus 25, No. 4. The German title is "Freisinn".

For a performance, see
http://www.youtube.com/watch?v=IGagpT6QnO4&feature=related

To find the answer to your question, we can start by researching Clara Wieck Schumann's composition titled "Forward." Clara Wieck Schumann was a German composer and pianist of the Romantic era, known for her works in solo piano music and lieder (art songs).

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By consulting these resources and searching specifically for Clara Wieck Schumann's composition "Forward," we will likely be able to ascertain the intended instrument or ensemble for this particular piece.