| ControllerEventListener | 
The  ControllerEventListener interface should be implemented by
 classes whose instances need to be notified when a  Sequencer has
 processed a requested type of MIDI control-change event.  
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| Instrument | 
 An instrument is a sound-synthesis algorithm with certain parameter settings,
 usually designed to emulate a specific real-world musical instrument or to
 achieve a specific sort of sound effect. 
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| InvalidMidiDataException | 
 An InvalidMidiDataException indicates that inappropriate MIDI data
 was encountered. 
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| MetaEventListener | 
The  MetaEventListener interface should be implemented by classes
 whose instances need to be notified when a  Sequencer has processed a
  MetaMessage.  
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| MetaMessage | 
A  MetaMessage is a  MidiMessage that is not meaningful to
 synthesizers, but that can be stored in a MIDI file and interpreted by a
 sequencer program.  
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| MidiChannel | 
 A MidiChannel object represents a single MIDI channel. 
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| MidiDevice | 
 MidiDevice is the base interface for all MIDI devices. 
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| MidiDevice.Info | 
A  MidiDevice.Info object contains assorted data about a
  MidiDevice, including its name, the company who created it, and
 descriptive text.  
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| MidiEvent | 
MIDI events contain a MIDI message and a corresponding time-stamp expressed
 in ticks, and can represent the MIDI event information stored in a MIDI file
 or a  Sequence object.  
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| MidiFileFormat | 
 A MidiFileFormat object encapsulates a MIDI file's type, as well as
 its length and timing information. 
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| MidiMessage | 
 MidiMessage is the base class for MIDI messages. 
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| MidiUnavailableException | 
 A MidiUnavailableException is thrown when a requested MIDI component
 cannot be opened or created because it is unavailable. 
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| Patch | 
 A Patch object represents a location, on a MIDI synthesizer, into
 which a single instrument is stored (loaded). 
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| Receiver | 
A  Receiver receives  MidiEvent objects and typically does
 something useful in response, such as interpreting them to generate sound or
 raw MIDI output.  
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| Sequence | 
A  Sequence is a data structure containing musical information (often
 an entire song or composition) that can be played back by a  Sequencer
 object.  
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| Sequencer | 
A hardware or software device that plays back a MIDI
  sequence is known as a  sequencer.  
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| Sequencer.SyncMode | 
 A SyncMode object represents one of the ways in which a MIDI
 sequencer's notion of time can be synchronized with a master or slave
 device. 
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| ShortMessage | 
 A ShortMessage contains a MIDI message that has at most two data
 bytes following its status byte. 
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| Soundbank | 
 A Soundbank contains a set of Instruments that can be loaded
 into a Synthesizer. 
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| SoundbankResource | 
A  SoundbankResource represents any audio resource stored in a
  Soundbank.  
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| Synthesizer | 
 A Synthesizer generates sound. 
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| Track | 
 A MIDI track is an independent stream of MIDI events (time-stamped MIDI data)
 that can be stored along with other tracks in a standard MIDI file. 
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| Transmitter | 
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| VoiceStatus | 
A  VoiceStatus object contains information about the current status of
 one of the voices produced by a  Synthesizer.  
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