======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '375'
                                          'artist'  'Faithless'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Insomnia (Moody mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trip hop', 'electronica', 'electronic', 'house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '126.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '126.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Insomnia (Moody mix)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Faithless'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'trip hop', 'electronica', 'electronic', 'house']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.35 dB'
'TXXX:replaygain_track_peak'                        '0.579511'

========================== row from database ==========================
                                              'id'  1287798
                                            'path'  /data/Music/Bulk/00poprockelectronic/Faithless/1996 - Insomnia (single)/Faithless - Insomnia (Moody mix).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  375
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  9011666
                                           'mtime'  1636911226
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1996 (single) electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Faithless
                                     'tag_release'  None
                                       'tag_title'  Insomnia (Moody mix)
                                             'bpm'  126.9
                                    'search_title'  'insomnia':1 'mix':4,5 'moody':2,3
                                   'search_artist'  'faithless':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1996':2 'acid':10 'downtempo':9 'electronic':5 'hop':7 'jazz':11 'or':8 'single':3,4 'trip':6
                                    'search_combo'  '00poprockelectronic':7 '1996':8 'acid':16 'downtempo':15 'electronic':11 'faithless':6B 'hop':13 'insomnia':1A 'jazz':17 'mix':4A,5A 'moody':2A,3A 'or':14 'single':9,10 'trip':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trip hop', 'electronica', 'electronic', 'house']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911225.66034  (2021-11-14 18:33:45)
                             'size'  9011666