Question: How long was the concert career of the woman that is speculated to be the frustrated love inspiration of Brahms' Liebeslieder Walzer, Op. 52?
Sentence (from "Liebeslieder, Op. 114 (Strauss)"): At the time it was conceived, the waltz was titled 'Liebesgedichte' or "Love Poems" and during its first performance, it was even announced as 'Liebesständchen' or "Love Serenade".
Relevant evidence: No