At least two bands are known to carry the name Violetta:
These are photos from concerts where Violetta played, so they may be of other bands that played the concert as well.
Violetta Aug 22, 2015 Warsaw, Mazovia, Poland Uploaded by Wfabr
Violetta May 22, 2015 Mexico City, Mexico City, Mexico Uploaded by Violetae
Violetta Mar 7, 2015 Douai, France Uploaded by Eugénie Cloud
Violetta Feb 25, 2015 Strasbourg, Grand Est, France Uploaded by Malvina
Violetta Jan 15, 2014 Paris, Île-de-France, France Uploaded by Eugénie Cloud