Windows comes with a MIDI synthesizer, the Microsoft GS Wavetable Synth. This synthesizer allows the playback of MIDI files and will play any MIDI events streamed to it in real-time (albeit with horrible lag, which will be addressed later).
Ammonia is a colorless highly irritating gas with a sharp suffocating odor. It dissolves easily in water to form ammonium hydroxide solution which can cause irritation and burns. Ammonia gas is easily compressed and forms a clear, colorless liquid under pressure.
Ammonia is a common ingredient in both commercial and DIY cleaners. It is also used to produce fertilisers, plastics, synthetic fibres, dyes and pharmaceuticals. Household ammonia, bought in the cleaning section of the supermarket, is really a solution of water with 5-10% ammonium hydroxide. Cloudy ammonia is the same thing with a little soap added.