Thanks so much for the helpful comments and suggestions for improvements to the original mix.
Here is the remixed version which I've edited using Audacity. Most of the changes are from 2:30 onwards.
Some of the backing instruments have either been lowered in volume or removed, and the Rhodes piano has less reverb and more volume which brings it more to the fore.
Finally, the thunderclap effect is louder and therefore more dramatic.

I'm just going to duplicate my YouTube comment here. It says it all.

"What was good is now excellent. Bravo!"

Andy, nice work! This really sounds great.

Andy, I almost missed this remix but I'm glad that I did get to hear it.

The changes you made turned a really good song into a masterpiece.

Sounds excellent on our monitors.

Kudos!

J&B

I haven't listened to the original song, but I think this is a tasteful instrumental with some really cool guitar playing.
Good tone as well.
Would work well as a movie score, e.g. in a Quentin Tarantino film.

Nice!

Thank you for all the kind comments. The song has now been scheduled for public release on 29th March. https://artists.landr.com/064837667379?

And here is the final release:
https://soundcloud.com/andyshearer-1/summertime-memories?

Andy,

I just listened to the release mix ... sounds great! I really like the percussion arrangement. Sweet sounding guitar!

Excellent - a real pleasure to my ears.

Take care,

Alan

Thanks Alan. It is all thanks to the helpful advice of the forum members.