Got hit by each of these today. One is Beatnikx (cute name huh?). Their IP address is 18.104.22.168. This took me to the RIPE network and lead to a British Petroleum company????? What's up with this? All it took was a Midi file.
The other was DDemo. IP address 22.214.171.124 which seems to go to an ISP called BBN Planet. Think it's a DSL connection. It just hit the root and neither of them checked Robots.txt.