Wonderful singing from The King's Singers! This piece features on the viola Grade 1 syllabus.
Here's an interesting extract from a documentary, showing how the singing of this song by the computer HAL in 2001: A Space Odyssey was inspired by early speech synthesis, and the 'first singing computer'.
This piece is a very useful one for getting more familiar with harmonic progressions and sonata form, as well as requiring a variety of bowing styles and a lot of dynamic contrast. So it's a shame that it seems to be so difficult to find high-quality performances of it! This one is good, definitely good enough to help you learn the piece, but if anyone finds a better one then please let me know. Scores and another recording are available on IMSLP.
The Scherzo: it's a Grade 4 piece, but don't worry, you're not expected to play it quite as fast as this! Dvořák wrote this piece for his own children to play, so it's perfect for improving violinists. Other movements have also been exam pieces in the past - the Larghetto, for instance, has been on the Grade 6 syllabus in the past.