Version with a second, a inner ring.
A3 is a locked grooved that you have to put the needle on as it hidden after the runout.
"23. TEST ME" is engraved next to the loop.
B4 is a short track "hidden" in the run-out grooves. It ends in a locked groove after 7 seconds.
"Kali" (i-dot looks like an eye) is engraved next to the loop.