======================== unified (from filesystem) ========================
                                         'bitrate'  '215.053'
                                        'duration'  '231'
                                          'artist'  'Underworld'
                                     'text_people'  ''
                                         'release'  'Crocodile'
                                           'title'  'Crocodile (edit)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-4', '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-3']")
                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'trance']"
                                     'discogstags'  "['electronic', 'progressive house', 'electro', 'tech house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno;electronic-th-trance'
                                             'bpm'  '125.083'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Crocodile'
'TBPM' (BPM (beats per minute))                     '125.083'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno', 'electronic-th-trance']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Crocodile (edit)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Underworld'
'TRCK' (Track number/Position in set)               '2'
'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:discogstags'                                  ['electronic', 'progressive house', 'electro', 'tech house']
'TXXX:lastfmtags'                                   ['electronica', 'dance', 'techno', 'electronic', 'trance']
'TXXX:q-bass'                                       '4'
'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'                                        '4'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.93 dB'
'TXXX:replaygain_track_peak'                        '0.528998'

========================== row from database ==========================
                                              'id'  1322808
                                            'path'  /data/Music/Bulk/00poprockelectronic/Underworld/Crocodile/Underworld - Crocodile - 02 - Crocodile (edit).mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  231
                                           'genre'  electronic-th-techno;electronic-th-trance
                                        'filesize'  6236017
                                           'mtime'  1620572455
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 02 electronic th techno;electronic th trance
                                      'tag_artist'  Underworld
                                     'tag_release'  Crocodile
                                       'tag_title'  Crocodile (edit)
                                             'bpm'  125.083
                                    'search_title'  'crocodile':1 'edit':2,3
                                   'search_artist'  'underworld':1
                                  'search_release'  'crocodile':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':2,5,7 'techno':4,6 'th':3 'trance':8
                                    'search_combo'  '00poprockelectronic':6 'crocodile':1A,5C 'edit':2A,3A 'electronic':7,10,12 'techno':9,11 'th':8 'trance':13 'underworld':4B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  6A
                                           '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-4', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'trance']
                                        'tag_date'  2007
                                     'discogstags'  ['electronic', 'progressive house', 'electro', 'tech house']

============================== file details ==============================
                                           'mtime'  1620572454.5336018  (2021-05-09 17:00:54)
                             'size'  6236017