Couldn't care less about Derulo. You will find every kind of music in Ibiza if you want to...
You have to remember that the clubbing tourists only amount to around 20% of visitors in the summer (happy to be corrected)
never heard of "crazy penis" b4You most probably heard this remix rather than the original...
Probably less, but out of this 20% are max 5% who know, what they are doing.