[Grace Themes]

Hi,

You are using the default images for gallery. The default images are very small in size ( 268 × 269 pixels) http://staging.bandrecordingslive.com/wp-content/uploads/2019/02/album04.jpg

Please remove all default images and use your actual large size of images for photo gallery.

Check the documentation to customize the galley
http://www.gracethemesdemo.com/documentation/music-club/#photo-gallery

Regards
Grace Themes