The best tension comes from the ever-present threat of something…you don’t know what, but something…being present but unseen. Producer Yullippe’s “Black Moon” throbs forward, all oxygen-depleting electronics, interrupted once in awhile by elegant touches, which seems to raise the song out of the tar pit it initially finds itself in. Yet it is all the silence and space around the music — and how Yullippe fills that void with a creeping presence that never bursts through, but always seems lurking. It gives “Black Moon” an extra layer of unease. Listen above.