Chart 2.

Reasons for having liked or not the PPE

Liked	Did not Like
Protects from loud noises when necessary	Does not hear the instrument played
Sound does not bother much	Prevents one from hearing the other musicians
The sound becomes smoother and more pleasant	Prevents from hearing the natural sound of the instrument
Better sensitivity	Much bothersome
Comfortable	Loss of hearing sensitivity
Protection and better sensitivity to singing	Makes it difficult to tune the instrument
Reduces sound pollution	Can not adapt
Ideal for intense music	Feeling of autophony of the sound played
Does no feel tinnitus at the end of exposure	Loses sound perception
	Inhibits the other sounds