Undertone

Undertone can mean: An underlying or implied tendency or meaning; an undercurrent
An element of an undertone series; a pitch whose frequency is an integral fraction of another
The Irish rock band The Undertones
The trance club in Melbourne, Australia called Undertone - www.myspace.com/undertoneevent or www.listen.to/undertone
The radio show/live stream on KissFM hosted by Dan Miatt with regular guests - www.kissfm.com.au