I have made some mockups to make it clearer, i think we could split in decreased margins or not, and text over images or not, so are these:
0) Leave it as it is, no changes please
1) Decreased margins for increasing artwork size and titles. Not touching the image, leaving it clean
2) No margins, text over the images. All the area is full by covers.
3) Like the number 2, but only showing the title when the mouse is over, so you see the full artwork unless the mouse is over
Tip: open each image in a tab and switch between them for a better comparison