======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '580'
                                          'artist'  'Everything but the Girl'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Before Today (Underworld Mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', '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-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'trip hop', 'female vocalists', 'electronic', 'chillout']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '144.852'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.852'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TIT2' (Title/songname/content description)         'Before Today (Underworld Mix)'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Everything but the Girl'
'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:lastfmtags'                                   ['electronica', 'trip hop', 'female vocalists', 'electronic', 'chillout']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.51 dB'
'TXXX:replaygain_track_peak'                        '0.454877'

========================== row from database ==========================
                                              'id'  1358212
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Everything but the Girl/Everything But The Girl - Before Today (Underworld mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  580
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  9296209
                                           'mtime'  1636910541
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip But The mix) electronic trip hop downtempo acid jazz
                                      'tag_artist'  Everything but the Girl
                                     'tag_release'  None
                                       'tag_title'  Before Today (Underworld Mix)
                                             'bpm'  144.852
                                    'search_title'  'before':1 'mix':5,6 'today':2 'underworld':3,4
                                   'search_artist'  'but':2 'everything':1 'girl':4 'the':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 'acid':11 'but':3 'downtempo':10 'electronic':7 'hop':9 'jazz':12 'mix':5,6 'the':4 'trip':8
                                    'search_combo'  '00poprockelectronic':11 '00trip':12 'acid':21 'before':1A 'but':8B,13 'downtempo':20 'electronic':17 'everything':7B 'girl':10B 'hop':19 'jazz':22 'mix':5A,6A,15,16 'the':9B,14 'today':2A 'trip':18 'underworld':3A,4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'trip hop', 'female vocalists', 'electronic', 'chillout']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910540.789895  (2021-11-14 18:22:20)
                             'size'  9296209