======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '207'
                                          'artist'  'Louise'
                                     'text_people'  ''
                                         'release'  'Elbow Beach'
                                           'title'  'First Kiss (Wedding Song)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                                      'lastfmtags'  "['90s', 'female vocalists', 'british', 'pop', 'rnb']"
                                     'discogstags'  "['hip hop', 'pop', 'rnb/swing', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '93.414'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Elbow Beach'
'TBPM' (BPM (beats per minute))                     '93.414'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'First Kiss (Wedding Song)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Louise'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['hip hop', 'pop', 'rnb/swing', 'synth-pop']
'TXXX:lastfmtags'                                   ['90s', 'female vocalists', 'british', 'pop', 'rnb']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.66 dB'
'TXXX:replaygain_track_peak'                        '0.595438'

========================== row from database ==========================
                                              'id'  1313214
                                            'path'  /data/Music/Bulk/00poprockelectronic/Louise/Louise__Elbow Beach__cifs6361.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  207
                                           'genre'  electronic-generic or radio
                                        'filesize'  4972108
                                           'mtime'  1630248924
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Louise__Elbow Beach__cifs6361 electronic generic or radio
                                      'tag_artist'  Louise
                                     'tag_release'  Elbow Beach
                                       'tag_title'  First Kiss (Wedding Song)
                                             'bpm'  93.414
                                    'search_title'  'first':1 'kiss':2 'song':5,6 'wedding':3,4
                                   'search_artist'  'louise':1
                                  'search_release'  'beach':2 'elbow':1
                                     'search_rest'  '00poprockelectronic':1 'beach':4 'cifs6361':5 'elbow':3 'electronic':6 'generic':7 'louise':2 'or':8 'radio':9
                                    'search_combo'  '00poprockelectronic':10 'beach':9C,13 'cifs6361':14 'elbow':8C,12 'electronic':15 'first':1A 'generic':16 'kiss':2A 'louise':7B,11 'or':17 'radio':18 'song':5A,6A 'wedding':3A,4A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', '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-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'female vocalists', 'british', 'pop', 'rnb']
                                        'tag_date'  1995
                                     'discogstags'  ['hip hop', 'pop', 'rnb/swing', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1630248923.759105  (2021-08-29 16:55:23)
                             'size'  4972108