Personally I am not at all interested in most “experimental” music of the20th century. Serialism, random music, prepared pianos etc. strike me as unbelievably dull.
I do however enjoy
tonal 20th century music with unusual harmonies and a sense that the composer actually knew something about music.
If you share the same sort of taste, then here are a few favourites:
Prokofiev – I like everything by Prokofiev. However there is a real unexplored goldmine in his lesser known pieces – most of which are not at all difficult to play. Have a look here where I suggested several of them:
https://pianoforum.net/smf/index.php/topic,2398.msg20989.html#msg20989(suggestions for Scarlatti sonatas and Prokofiev pieces of beginner/intermediate level).
Shostakovitch – Besides his most well known pieces (the concertos, the preludes and fugues) which can be frighteningly difficult he has also composed many easy pieces. Schirmer publishes a great collection of Shostakovitch easier pieces called “Easy Pieces for the Piano”. Excellent material sounding far more difficult than it actually is. My favourites are Lyrical waltz, Lullaby and Spanish dance. Try also his collection “Dances of the dolls” (My favourites are “Hurdy Gurdy” and “Dance”)
and a set of preludes ranging from grade 5 to grade 8. Have a look here:
https://pianoforum.net/smf/index.php/topic,2035.msg16633.html#msg16633(Shostakovich preludes op. 34)
Andre Previn: Impressions (20 short pieces. My favourites are no. 5 “By a quiet stream”, no. 10 “Perpetual motion” and no. 17 “Mimicry”)
Richard Rodney Bennet – Martin Jones has just released a double CD with Bennett’s complete piano music.
Lennox Berkeley – I particularly like his “Five piano pieces” op. 4. (His complete solo piano works have recently been published in a single volume – Collected Piano Works – Edited by Peter Dickinson – published by Chester music, and there are recordings available for all of them).
Barber – Have a look here:
https://pianoforum.net/smf/index.php/topic,2363.msg20436.html#msg20436(Barber piano pieces)
Alexander Tcherepenin – Bagatelles. Short, technically undemanding pieces with modern harmonies.
Villa Lobos – One of the most interesting composers of the 20th century, Heitor Villa Lobos composed some extremely beautiful music – including for piano. There are horribly difficult pieces as well as didactic easy ones. Have a look here:
https://pianoforum.net/smf/index.php/topic,3381.msg30191.html#msg30191(Villa Lobos)
Victor Carbajo – I recently came across the website of this contemporary Spanish composer. Wonderful music. The site has most of his works for free download as well as midi files so you can have an idea of what it sounds like.
Have a look here:
https://www.pianoforum.net/smf/index.php/topic,8368.0.html(Victor Carbajo)
Lowell Liebermann – His Album for the Young is pretty easy, but his Gargoyles and Nocturne are advanced. Have a look here:
https://www.pianostreet.com/smf/index.php/topic,9968.0.html(Lowell Liebermann)
For general discuassion on modern composers, have a look at reply #6 here:
https://pianoforum.net/smf/index.php/topic,2372.msg20574.html#msg20574(New music – Less than 7 minutes long)
Have a look here:
https://pianoforum.net/smf/index.php/topic,4227.msg39060.html#msg39060(contemporary and modern pieces)
Have a look at replies #33 (several 20th century composers) and #38 (Villa Lobos) here:
https://pianoforum.net/smf/index.php/topic,2352.msg20235.html#msg20235(uncommon repertory)
Have a look at replies #10 and #13 here:
https://pianoforum.net/smf/index.php/topic,4140.msg38111.html#msg38111(True repertory for total beginners)
Finally, let us not forget the minimalists. (Arvo Part, Phillip Glass, Ludovico Einaudi). Have a look here:
https://www.pianoforum.net/smf/index.php/topic,8225.0.htmlThis should get you going for a while
Best wishes.
Bernhard.