Search for “FL Song Gen” in ComfyUI Manager and install.

cd ComfyUI/custom_nodes
git clone https://github.com/filliptm/ComfyUI_FL-SongGen.git
cd ComfyUI_FL-SongGen
pip install -r requirements.txt

Basic Structure

Lyrics use section tags separated by ; (space-semicolon-space) with phrases separated by periods .:

[intro-short] ; [verse] First line. Second line. Third line ; [chorus] Chorus line one. Chorus line two ; [outro-short]

Structure Labels

Instrumental sections (no lyrics):

| Tag | Duration | Description |

|—–|:——–:|————-|

| [intro-short] | ~0-10s | Short instrumental intro |

| [intro-medium] | ~10-20s | Medium instrumental intro |

| [inst-short] | ~0-10s | Short instrumental break |

| [inst-medium] | ~10-20s | Medium instrumental break |

| [outro-short] | ~0-10s | Short instrumental outro |

| [outro-medium] | ~10-20s | Medium instrumental outro |

Lyrical sections (lyrics required):

| Tag | Description |

|—–|————-|

| [verse] | Verse – typically tells the story |

| [chorus] | Chorus – the catchy, repeated hook |

| [bridge] | Bridge – contrasting part before final chorus |

Formatting Rules

[intro-short] ; [verse] These faded memories of us. I can't erase the tears you cried before. Unchained this heart to find its way. My peace won't beg you to stay ; [chorus] Like a fool begs for supper. I find myself waiting for her. Only to find the broken pieces of my heart. That was needed for my soul to love again ; [inst-short] ; [verse] Silhouettes where you once stood. Life's rhythm changed its beat for good. Numb to whispers we once knew. My path won't circle back to you ; [chorus] Like a fool begs for supper. I find myself waiting for her. Only to find the broken pieces of my heart. That was needed for my soul to love again ; [outro-short]

Format

"gender, timbre, genre, emotion, instruments, the bpm is X"

All dimensions are optional and can be combined in any order.

Available Options

| Dimension | Options |

|———–|———|

| Gender | male, female |

| Timbre | dark, bright, warm, soft, rock |

| Genre | pop, rock, jazz, hip hop, R&B, folk, electronic, blues, country, classical, soul, reggae, k-pop |

| Emotion | sad, happy, emotional, angry, uplifting, romantic, melancholic, intense |

| Instruments | See list below |

| BPM | the bpm is 120 (use this exact phrase format) |

Common Instrument Combinations

Example Descriptions

female, warm, pop, emotional, piano and drums, the bpm is 120

male, dark, hip hop, sad, synthesizer and drums

female, bright, jazz, romantic, piano and saxophone, the bpm is 90

male, rock, intense, electric guitar and drums, the bpm is 140

When using Auto Style mode, select from these presets:

| Preset | Description |

|——–|————-|

| Pop | Modern pop music |

| R&B | Rhythm and blues |

| Dance | Electronic dance music |

| Jazz | Jazz style |

| Folk | Folk/acoustic |

| Rock | Rock music |

| Chinese Style | Modern Chinese pop |

| Chinese Tradition | Traditional Chinese music |

| Chinese Opera | Chinese opera style |

| Metal | Heavy metal |

| Reggae | Reggae style |

| Auto | Let the model choose |

Use a 10-second reference audio to guide the musical style:

Combining with Descriptions

You can optionally provide a text description alongside reference audio to further guide the generation. This can be useful to:

Note: If the description conflicts with the reference audio style, results may be unpredictable. Use complementary descriptions for best results.

Lyrics Tips

Description Tips

General Tips