======================== unified (from filesystem) ========================
                                         'bitrate'  '230.579'
                                        'duration'  '183'
                                          'artist'  'Safri Duo'
                                     'text_people'  ''
                                         'release'  'Disco Nr.1 (Disc 2)'
                                           'title'  'Samb-Adagio'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'trance', 'techno', 'electronic', 'danish']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '138.040'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Disco Nr.1 (Disc 2)'
'TBPM' (BPM (beats per minute))                     '138.040'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TIT2' (Title/songname/content description)         'Samb-Adagio'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Safri Duo'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'trance', 'techno', 'electronic', 'danish']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.354923'

========================== row from database ==========================
                                              'id'  1301068
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Disco Nr1 (disc 2)-17-Safri Duo-Samb-Adagio.mp3
                                         'working'  None
                                         'bitrate'  230
                                    'duration_sec'  183
                                           'genre'  electronic-th-techno
                                        'filesize'  5300727
                                           'mtime'  1620572778
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Nr1 (disc 17 electronic th techno
                                      'tag_artist'  Safri Duo
                                     'tag_release'  Disco Nr.1 (Disc 2)
                                       'tag_title'  Samb-Adagio
                                             'bpm'  138.04
                                    'search_title'  'adagio':2 'samb':1 'sambadagio':3
                                   'search_artist'  'duo':2 'safri':1
                                  'search_release'  '1':3 '2':7,8 'disc':5,6 'disco':1 'nr':2 'nr1':4
                                     'search_rest'  '00poprockelectronic':1 'disc':8,9 'electronic':10 'files':5,6 'loose':3,4 'nr1':7 'techno':12 'th':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 '1':8C '2':12C,13C 'adagio':2A 'disc':10C,11C,21,22 'disco':6C 'duo':5B 'electronic':23 'files':18,19 'loose':16,17 'nr':7C 'nr1':9C,20 'safri':4B 'samb':1A 'sambadagio':3A 'techno':25 'th':24 'unsorted':15
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'techno', 'electronic', 'danish']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572778.18432  (2021-05-09 17:06:18)
                             'size'  5300727