1: pocketBlakus Cello
https://vstbuzz.com/freebies/pocketblakus-cello/

2: Ample Guitar M Lite II and Ample Bass P Lite II
https://www.amplesound.net/en/download.asp

3: MT Power DrumKit 2
https://www.powerdrumkit.com/download76187.php

4: Versilian Upright Piano
https://vis.versilstudios.com/upright-1.html