Firstly you are obviously an amazing musician, the track has allot of epic feel to it like a huge majestic scene or something so really amazing and I just wanted to give some friendly advice.
Click Track - Use a click track from the start when you are recording. If you are using midi it is easy to quantize all of the notes, if you are not using midi but recording a keyboard you should use a metronome. It’s hard to play with a metronome but if you do it enough you can get allot better at it.
If you don’t have a metronome an easy way to get some type of rhythmic indicator would be to play the demo drums from your keyboard but mute everything except the hihat and snare and record that and use it as your tempo track.
Syncing Recordings - If you are doing arpeggios or some rigid triads that have to be perfectly in sync you can just loop over that part and record it over and over again without stopping recording, Start a little before the part and then come in and if the loop is right it will automatically start again, then afterward choose the best one.
Reviewers - The reviewers are looking for submissions that will fit within what most of the clients are purchasing. That means it should be made with the idea that it will be used as some type of background for a specific project. They suggest that you have the project in mind before you make the track.
Track Length - I don’t think the length is necessarily a problem but if it’s long you should be introducing allot of new stuff. The average track will change after 1-2 measures, it will either have more or less energy and it will add or remove something so that it sounds different but keeps the character of the track.
In most cases, the audience only needs to hear a measure once or twice and then it’s time to change. Since all of our clients should know how to work with audio files they can loop whatever part they want if we give them 1 measure and then they can fit it to the length of their track.
In other words, don’t repeat the same thing over and over because it’s not necessary.
Midi - Start using midi asap if you aren’t already. Midi will give you the ability to record and then quantize the notes after recording and you can make them perfectly in sync. It still takes work but if you are recording from a keyboard it’s going to be very difficult though not impossible to get the tempo and instruments to sync perfectly.
Hope this helps and you are great at building emotion with music!
