======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '212'
                                          'artist'  'Bowery Electric'
                                     'text_people'  ''
                                         'release'  'Beat'
                                           'title'  'Under the Sun'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['post rock', 'shoegaze', 'trip hop', 'electronic', 'ambient']"
                                     'discogstags'  "['electronic', 'rock', 'trip hop', 'shoegaze', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '143.721'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Beat'
'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Under the Sun'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bowery Electric'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'trip hop', 'shoegaze', 'ambient']
'TXXX:lastfmtags'                                   ['post rock', 'shoegaze', 'trip hop', 'electronic', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.55 dB'
'TXXX:replaygain_track_peak'                        '0.817131'

========================== row from database ==========================
                                              'id'  1333659
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Bowery Electric/Beat/04 - under the sun.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  212
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  3421296
                                           'mtime'  1636910356
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip 04 under sun electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Bowery Electric
                                     'tag_release'  Beat
                                       'tag_title'  Under the Sun
                                             'bpm'  143.721
                                    'search_title'  'sun':3 'the':2 'under':1
                                   'search_artist'  'bowery':1 'electric':2
                                  'search_release'  'beat':1
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 'acid':10 'downtempo':9 'electronic':5 'hop':7 'jazz':11 'or':8 'sun':4 'trip':6 'under':3
                                    'search_combo'  '00poprockelectronic':7 '00trip':8 'acid':16 'beat':6C 'bowery':4B 'downtempo':15 'electric':5B 'electronic':11 'hop':13 'jazz':17 'or':14 'sun':3A,10 'the':2A 'trip':12 'under':1A,9
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['post rock', 'shoegaze', 'trip hop', 'electronic', 'ambient']
                                        'tag_date'  1996
                                     'discogstags'  ['electronic', 'rock', 'trip hop', 'shoegaze', 'ambient']

============================== file details ==============================
                                           'mtime'  1636910355.761366  (2021-11-14 18:19:15)
                             'size'  3421296