The first (and still best known) example comes from Johann Sebastian Bach, whose Italian Concerto, BWV 971, was published in 1735.
Even though it was written for two-manual harpsichord, it is regularly played on the piano and considered the first example of a concerto fitted to solo keyboard.
It includes markings such as "Tutti", "Solo" and "Piano", as well as instrumental directions such as "quasi-trombe" and "quasi-celli".
The Russian composer and violinist Joseph Achron wrote in 1941 his final work Concerto for solo piano, op.
Kaikhosru Shapurji Sorabji's Concerto da suonare da me solo e senza orchestra, per divertirmi (1946) is clearly inspired by Alkan; for instance, the third movement of the work is titled Scherzo diabolico—a reference to Alkan's Étude Op.