Concerto is a style of classical music, that is defined as follows:  The fundamental principle of the Concerto is to alternate a solo instrument with the orchestral mass, in a permanent contrast effect. This does not prevent them from conversing, on the contrary. This creates an interesting  musical Debate ..

World Music Strings Concerto By Yves Estell

Sonatina, does not have a strict definition as a musical term. It is a term applied by the composer to a piece that is in the form of a sonata, but technically shorter and lighter (and a little modernised to appeal to those who still shun Classical) 😉!
I put myself in the shoes of "Master Beethoven" during the composition and I thought: what if he lived today, with all this technology, these means so accessible to all and this possibility to do everything, all alone! How would he approach the question? I let myself go, whereas this piece was intended for something else... "Frédérique will tell you..."
Now it has become a Modern Sonatina, which is marked by the seal of the "World Music" which is my style.
And the majestic nobleness of the "Classical" which has no equal!
Before letting you discover ...I specify you that each instrument was played and recorded on its track ( there are 26 instruments in all, even it sounds so simple), the whole was mixed, and mastered before being reduced to MP3🤣😂🤣.
I'll leave you with the list below of all the accessories used to put it all together ...I didn't think it was worth mentioning the computer; as everything is fiddled on it! 
But everything else is there!

Yves estell