What song, originally composed by Pyotr Ilyich Tchaikovsky, was performed by Elizabeth de la Porte in South Africa? 
Elizabeth de la Porte:  She was in her mid-teens when she played the Tchaikovsky First Piano Concerto for a South African radio broadcast; however her strongest affinities always lay with J. S. Bach. Piano Concerto No. 1 (Tchaikovsky): The Piano Concerto No. 1 in B-flat minor, Op. Piano Concerto No. 1 (Tchaikovsky):  23, was composed by Pyotr Ilyich Tchaikovsky between November 1874 and February 1875.
Piano Concerto No. 1