I recall the sound too, I think it is the sound of tao spawning skele pet in or near SZ for it to be killed by a guard, to level the skill.
Never got GAxe on euro mir, stepped directly to jmace (from that infamous Easter event). After that I killed tons of subs but never had it drop. Playing solo I didn't get many bosses that might drop it.
I recall now I got PAxe that some bigger boys dropped in PK in WW, in the forest on route to WT
Also had GA for few minutes in hand when somebody got killed by zombies, I found it and killed few zombies with it before the owner came back and I gave it back. Never like that line about finders keepers, or that items on ground are nobody's, free for taking.
OW blood curdling scream set my heart rate to max