Index - L
| LazyDur | Euterpea.Music, Euterpea |
| Lead1Square | Euterpea.Music, Euterpea |
| Lead2Sawtooth | Euterpea.Music, Euterpea |
| Lead3Calliope | Euterpea.Music, Euterpea |
| Lead4Chiff | Euterpea.Music, Euterpea |
| Lead5Charang | Euterpea.Music, Euterpea |
| Lead6Voice | Euterpea.Music, Euterpea |
| Lead7Fifths | Euterpea.Music, Euterpea |
| Lead8BassLead | Euterpea.Music, Euterpea |
| left | Euterpea |
| leftApp | Euterpea |
| LeftPizz | Euterpea.Music, Euterpea |
| Legato | Euterpea.Music, Euterpea |
| line | |
| 1 (Function) | Euterpea.Music, Euterpea |
| 2 (Function) | Euterpea.IO.Audio.CSound |
| line1 | Euterpea.Music, Euterpea |
| linearCP | Euterpea.IO.MIDI.Play, Euterpea.IO.MIDI, Euterpea |
| linen | Euterpea.IO.Audio.CSound |
| lineSeg1 | Euterpea.IO.Audio.CSound |
| lineToList | Euterpea.Music, Euterpea |
| linseg | Euterpea.IO.Audio.CSound |
| Locrian | Euterpea.Music, Euterpea |
| LongGuiro | Euterpea.Music, Euterpea |
| LongWhistle | Euterpea.Music, Euterpea |
| lookupB | Euterpea.IO.MIDI.ToMidi, Euterpea.IO.MIDI, Euterpea |
| loop | Euterpea |
| Loudness | Euterpea.Music, Euterpea |
| LowAgogo | Euterpea.Music, Euterpea |
| LowBongo | Euterpea.Music, Euterpea |
| LowConga | Euterpea.Music, Euterpea |
| LowFloorTom | Euterpea.Music, Euterpea |
| LowMidTom | Euterpea.Music, Euterpea |
| LowTimbale | Euterpea.Music, Euterpea |
| LowTom | Euterpea.Music, Euterpea |
| LowWoodBlock | Euterpea.Music, Euterpea |
| Lydian | Euterpea.Music, Euterpea |
| Lyrics | Euterpea.IO.MIDI.MidiIO, Euterpea.IO.MIDI, Euterpea |