Ok, so on paper it looks pretty tricky; listen to the recording... it is tricky! Firstly, a massive hat's off to whoever played the trumpet on the recording. Nearly four minutes of solid playing is no mean feat at the best of times but this is a serious number of notes to play, and at a decent lick too. I guess the pay off to playing it a little slower would have the mouthpiece attached to your face for longer so it's a fine trade off! However, the proof is in the pudding: it is playable unlike many similar transcriptions on this site.

This arrangement uses the full range of the trumpet but is not overly high for bars and bars and there has been some clever re-writing to make the original violin line work for brass. Four sharps! I don't know if this is the original key without looking it up elsewhere but I guess it means the lowest written notes are F# (and there are quite a few of them) rather than either falsely writing low Fs or raising the higher register - I reckon it'd work a semitone higher to make it more accessible? That said, E major (4#) is generally 'under the fingers' though the work below the stave is always going to be tricky. Anyhow, it probably wasn't written to be easy!

Great effort and the great performance proves that some hard work on the notes will reap rewards.