{"song_id":"song_0001","asset_id":"asset_0001_master_lossless","type":11,"role":"reference","split":"train","audio_path":"business_audio/song_0001/master_lossless.wav","source_dataset":"internal_catalog","title":"Song A","artist":"Artist A","album_id":"album_01","bucket":"lossless_reference_core","offset_sec":0.0,"duration_sec":180.0,"sample_rate":44100,"bitrate":1411,"license":"licensed","is_lossless":true}
{"song_id":"song_0001","asset_id":"asset_0001_douyin_clip","type":7,"role":"query","split":"test","audio_path":"business_audio/song_0001/douyin_clip.mp3","source_dataset":"internal_catalog","title":"Song A","artist":"Artist A","album_id":"album_01","bucket":"short_video_hook","offset_sec":42.5,"duration_sec":8.0,"sample_rate":44100,"bitrate":192,"license":"licensed","is_lossless":false}
{"song_id":"song_0002","asset_id":"asset_0002_demo","type":18,"role":"excluded","split":"holdout","audio_path":"business_audio/song_0002/demo.mp3","source_dataset":"internal_catalog","title":"Song B","artist":"Artist B","album_id":"album_02","bucket":"demo_variation_pool","offset_sec":0.0,"duration_sec":95.0,"sample_rate":44100,"bitrate":192,"license":"review_pending","is_lossless":false}