Real-time "playback" of songs with predefined lyrics using a MIDI keyboard is also supported. Orchestra hit is defined in the General Midi sound set. Several tracks feature vocalizations by Schachner processed through a vocoder and MIDI controller. However, different products used different sounds attached to their MIDI controllers. Pro Tools can synchronized to external devices using SMPTE/EBU timecode or MIDI timecode. Keyboards are by far the most common type of MIDI controller. Yamaha's Extended General MIDI, or XG, followed in 1994. It is also able to interface with MIDI and OSC equipment. More usual is to contain the lyrics within the same MIDI file. Apple Motion allows control of animation parameters through MIDI. Drawbar controllers are for use with MIDI and virtual organs. It is also used for manual MIDI sequencing. A lack of MIDI-out capability limits the use of external MIDI instruments. Bits for Julian Colbeck's MIDI sample business. One addition was the ability for plugins to receive MIDI data.