======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '218'
                                          'artist'  'Faithless'
                                     'text_people'  ''
                                         'release'  'Insomnia'
                                           'title'  'Insomnia (Original Radio Edit)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-4', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['dance', 'trip hop', 'electronica', 'electronic', 'house']"
                                     'discogstags'  "['electronic', 'trance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-th-trance'
                                             'bpm'  '126.806'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Insomnia'
'TBPM' (BPM (beats per minute))                     '126.806'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-trance'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Insomnia (Original Radio Edit)'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Faithless'
'TRCK' (Track number/Position in set)               '2'
'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', 'trance']
'TXXX:lastfmtags'                                   ['dance', 'trip hop', 'electronica', 'electronic', 'house']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.644859'

========================== row from database ==========================
                                              'id'  1361604
                                            'path'  /data/Music/Bulk/00poprockelectronic/Faithless/1996 - Insomnia (single)/02 - Insomnia (Original Radio Edit).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  218
                                           'genre'  electronic-th-trance
                                        'filesize'  5246703
                                           'mtime'  1621696769
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1996 (single) 02 electronic trance
                                      'tag_artist'  Faithless
                                     'tag_release'  Insomnia
                                       'tag_title'  Insomnia (Original Radio Edit)
                                             'bpm'  126.806
                                    'search_title'  'edit':5,6 'insomnia':1 'original':2,3 'radio':4
                                   'search_artist'  'faithless':1
                                  'search_release'  'insomnia':1
                                     'search_rest'  '00poprockelectronic':1 '1996':2 'electronic':5 'single':3,4 'trance':6
                                    'search_combo'  '00poprockelectronic':9 '1996':10 'edit':5A,6A 'electronic':13 'faithless':7B 'insomnia':1A,8C 'original':2A,3A 'radio':4A 'single':11,12 'trance':14
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trip hop', 'electronica', 'electronic', 'house']
                                        'tag_date'  1995
                                     'discogstags'  ['electronic', 'trance']

============================== file details ==============================
                                           'mtime'  1621696769.372393  (2021-05-22 17:19:29)
                             'size'  5246703