======================== unified (from filesystem) ========================
                                         'bitrate'  '188.009'
                                        'duration'  '224'
                                          'artist'  'Tom Waits'
                                     'text_people'  ''
                                         'release'  'Small Change'
                                           'title'  'Jitterbug Boy (Sharing a Curbs'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-2', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'Q-PLAY-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['jazz', 'pop', 'folk, world, & country', 'spoken word', 'contemporary jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '139.178'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Small Change'
'TBPM' (BPM (beats per minute))                     '139.178'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Jitterbug Boy (Sharing a Curbs'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['jazz', 'pop', 'folk, world, & country', 'spoken word', 'contemporary jazz']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.90 dB'
'TXXX:replaygain_track_peak'                        '0.546376'

========================== row from database ==========================
                                              'id'  1365071
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/00songwriter-eos/Tom Waits/1976 - Small Change/MBZ;#Tom Waits;#Small Change;#03;#Jitterburg Boy.mp3
                                         'working'  None
                                         'bitrate'  188
                                    'duration_sec'  224
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  5280531
                                           'mtime'  1639508241
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 00songwriter eos 1976 MBZ;#Tom Waits;#Small Change;#03;#Jitterburg ifs songwriter eos
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Small Change
                                       'tag_title'  Jitterbug Boy (Sharing a Curbs
                                             'bpm'  139.178
                                    'search_title'  'a':5 'boy':2 'curbs':6 'jitterbug':1 'sharing':3,4
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'change':2 'small':1
                                     'search_rest'  '00singer':1 '00songwriter':4 '03':15,18 '1976':5 'change':14,17 'eos':3 'ifs':20 'jitterburg':16,19 'mbz':6,8 'small':11,13 'songwriter':2 'tom':7,9 'waits':10,12
                                    'search_combo'  '00singer':11 '00songwriter':14 '03':25,28 '1976':15 'a':5A 'boy':2A 'change':10C,24,27 'curbs':6A 'eos':13 'ifs':30 'jitterbug':1A 'jitterburg':26,29 'mbz':16,18 'sharing':3A,4A 'small':9C,21,23 'songwriter':12 'tom':7B,17,19 'waits':8B,20,22
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1989
                                     'discogstags'  ['jazz', 'pop', 'folk, world, & country', 'spoken word', 'contemporary jazz']

============================== file details ==============================
                                           'mtime'  1639508241.4509418  (2021-12-14 19:57:21)
                             'size'  5280531