Ambient Keys 1.5 for Windows was released in February and now we're proud to announce the release of version 1.5 for Audio Unit hosts on Mac OS X. Ambient Keys is a synthesizer, which plays an extensive set of ambient waveforms, processing these using a filter, envelopes, an LFO, an ensemble, delays and an effect section which features 133 different effect modes, including crossfading effects and layered effects.