Air op.6 by Jan Ladislav Dussek, (1760-1812) for easy to early intermediate piano.
With finger position suggestions. With downloadable mp3 just for audio-help.
Pages: 2 pages, 1:25'

Allegretto op. 90 by  L.v.Beethoven  for easy to early intermediate piano.

With some finger position suggestions. With downloadable mp3 just for audio-help.

Pages: 2 pages, 1 min.

El Noi de la Mare (The Child of the Mother) is a famous traditional Catalan Christmas song. Easy piano solo, 2 pages, 44 bars.
With downloadable mp3 for audio help.

Allegretto in C Major op.52 by Johann Nepomuk Hummel (1778-1837), piano solo, 2 pages, 45 measures, 1:10 min, with downloadable mp3 for audio help, easy to early intermediate.

Deutschlandlied ("Song of Germany", also known as "Das Lied der Deutschen" or "The Song of the Germans"), was conducted by Joseph Haydn in 1797.
Here is a piano duet 4-hands arrangement, 5 pages (3 pages both hands, 1 page prima, 1 page seconda) with downloadable mp3 for audio help.