It takes some time to clock that Sol.Hz , the latest album from British ambient-dub droneshapers Seefeel , has even started. At first it’s just silence. If you’re listening on a phone or computer and you don’t have the volume turned up loud, you may at first wonder if some kind of glitch has interrupted the stream. But once your ears become accustomed to the foggy swell leaching into the air, the music comes on like financial ruin did for one of Hemingway’s characters: Gradually, then suddenly. Without doing much of anything at all, that drone—coruscating, electric, quivering like a heat mirage over hot pavement—builds to its distorted peak, then abruptly begins its long downward slide back into silence, a nothingness that lingers longer than you’d expect. If you were to follow the track’s progression with a stopwatch, you’d realize that most of its running time is spent either fading in or fading out. It’s almost as though Seefeel preferred coming or going to staying in one place.…