I think form time to time, when it comes to Haydn, Mozart, and maybe to a lesser extent Beethoven, we tend to think of the Sonatas. But they all wrote other stuff as well, much of it worth playing.
Obviously with Beethoven there are some nice bagatelles, and some sets of variations, and I do play these sometimes (not the Diabelli ones !!) However the only Haydn (other than sonatas) I play is the Variations in F Minor/Major Hob XVI/6. I enjoy this work immensely. What else is worth playing by him ?
Moving on to Mozart the only (non-sonata) thing I play is the Rondo in A Minor K511 (as difficult as the harder sonatas!). Again does anyone have recommendations ?

I am not keen on any of Haydn's sets of variations apart from Hob XVI/6 but many of Mozart's sets are lovely. I am especially fond of K500, variations on an Allegretto in Bb. Also the four Fantasias, the three Rondos and the Adagio in B minor are all lovely works.

Beethoven's 6 Bagatelles Op 126 I rate as some of his finest works for the piano. They are very moving and as music are as effective as anything in the last 6 or 7 sonatas, yet they are nowhere near so technically challenging - in places they are almost embarrasingly simple - which perversely presents the performer with a difficult challenge to create the sound that Beethoven was after. There are also the Rondi, the Andante Favori, his Baroque-sounding Prelude in F minor, and many many sets of beautful variations. Everyone knows the famous Eroica variations, the 6 variations Op 34, the spectacular 32 variations in Cm and the intellectual masterpiece of the Diabelli variations, but the less well known ones are worth exploring too. The variations and Fugue in Eb Op 35 are just one set that is also excellent yet they are virtually unknown.

Thanks for that. I have most of that music but never tried much of it (this why I started this post), though I have done the Andante Favori.
I'll try the Op126 Bagatelles, and Mozart K500 and the B Minor Adagio. I have tried the D Major Rondo, but found it rather trivial, as I did with the 'God save the King' and 'Rule Britannia' variations. I guess the same applies to Mozarts 'Ah vous dirai-je, maman', but maybe I just think this because all these are on well-known themes !

Its interesting you should say that actually, because until the last 6-8 months or so, I never really played any sonatas at all. I don't play much Mozart any more, and although I used to play a couple of Mozart sonatas for fun when I was younger, I mostly played Mozart's variations (of which there are loads to choose from!) and the beautiful fantasies that he wrote and also rondos and allegros, a few of which are duets.

For Beethoven's part, my all time favourite that I play is Rondo A Cappricio.
Yes there are the bagatelles, (which I don't know well) but there are also some really beautiful polonaises and of course the Eroica variations. Actually, most of the Beethoven I know are danses - minuets, waltzes, gavottes, ecossaises, allegrettos - that I use with my students. I don't know many advanced pieces in my repertoire from Beethoven.

I don't really like Haydn, so I can't really say anything about his other pieces as I don't have any experience.

As for Haydn, he wrote a 'Fantasy in C Major' for Piano I believe: it appears on Trinity's Advanced Certificate syllabus. I've not heard it performed, or even seen a score, so I've no idea if it's worth a look. I wonder if he wrote a lot of Fantasies and Variations and other works, besides Sonatas?

denmark

I have a copy of the Fantasie in C HobXVII/4, but never tried it. Now I will have a go ! It begins with a Presto. It's in a miscellaneous album I have by Haydn. There are several other sets of variations, a Rondo and a couple of Dances, but the only piece I have ever played is the F Minor/Major variations I referred to an an earlier post

I hardly ever play solo sonatas, but I like to have at least one of the two Mozart piano quartets, the Kegelstatt trio or the quintet for piano and wind in my repertoire ready to play with any interested musicians. I can usually get the lovely little E minor violin sonata fit to rehearse with the violinist, at my amateur level, in a few days of hard work.

For anyone with adequate technique, I suggest the Schubert "Wanderer" Fantasy.

The LCM grade 8 piano book has a rather nice piece by Schubert which I had not come accross before - Adagio in G - needless to say I will be playing it in the exam later this year.

Baerenreiter have some very nice booklets (the series is called "Easy Piano Pieces and Dances") with easy, less well-known pieces by different authors.
In the Haydn one, there are some beautiful gems which require no great effort and are exquisite to play. Adagio in F Hob. XII 9 is one of these.
The Mozart booklet has some Kontretanze (for Johann Rudolf Graf Czernin KV 269 b Nos 1 and 2) which I had a nice time playing when I was doing around Grade 3 material and there are Minuets, Ballet music from "Ascanio in Alba" and so on. I bought a set of 10 of these booklets and have played one or two of the pieces in some booklets. The Beethoven one also has nice things to play while the Liszt one and Haendel one have some pieces which I later discovered were alternative ones for the Lists.

So what do you think of them (or any of the other suggestions you've had?)

I haven't played much during the last week but may have chance tonight. Go on, since you suggested them I'll look at the Beethoven Op126 Bagatelles.