70, by Anton Rubinstein is a Romantic concerto that was once highly esteemed and was in the repertoire of the Russian and Polish piano virtuosos Sergei Rachmaninoff and Ignacy Jan Paderewski.
Anton Rubinstein, himself a renowned pianist, left five numbered piano concertos.
(He wrote three earlier piano concertos; two were lost and the third was transformed into Octet, Op.
Rubinstein composed the Fourth Concerto in 1864.
He dedicated the concerto to the violinist Ferdinand David.