======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '136'
                                          'artist'  'Carlos Gardel'
                                     'text_people'  ''
                                         'release'  'Le Creatur Du Tango Argentin'
                                           'title'  'La Cumparsita'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['tango argentino', 'argentina', 'latin', 'oldies', 'tango']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga;loc-samerica-argentina'
                                             'bpm'  '137.199'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Le Creatur Du Tango Argentin'
'TBPM' (BPM (beats per minute))                     '137.199'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-tango or milonga', 'loc-samerica-argentina']
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'La Cumparsita'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carlos Gardel'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['tango argentino', 'argentina', 'latin', 'oldies', 'tango']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.98 dB'
'TXXX:replaygain_track_peak'                        '0.474481'

========================== row from database ==========================
                                              'id'  1494478
                                            'path'  /data/Music/Bulk/00localcharacter/00americas/CARLOS GARDEL - ^1991^Le Createur Du Tango Argentin/01 - La Cumparsita.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  136
                                           'genre'  loc-style-tango or milonga;loc-samerica-argentina
                                        'filesize'  3817954
                                           'mtime'  1620528172
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00americas CARLOS GARDEL ^1991^Le Createur 01 loc style tango or milonga;loc samerica argentina
                                      'tag_artist'  Carlos Gardel
                                     'tag_release'  Le Creatur Du Tango Argentin
                                       'tag_title'  La Cumparsita
                                             'bpm'  137.199
                                    'search_title'  'cumparsita':2 'la':1
                                   'search_artist'  'carlos':1 'gardel':2
                                  'search_release'  'argentin':5 'creatur':2 'du':3 'le':1 'tango':4
                                     'search_rest'  '00americas':1 '1991':4 'argentina':16 'carlos':2 'createur':6 'gardel':3 'le':5 'loc':7,12,14 'milonga':11,13 'or':10 'samerica':15 'style':8 'tango':9
                                    'search_combo'  '00americas':10 '1991':13 'argentin':9C 'argentina':25 'carlos':3B,11 'createur':15 'creatur':6C 'cumparsita':2A 'du':7C 'gardel':4B,12 'la':1A 'le':5C,14 'loc':16,21,23 'milonga':20,22 'or':19 'samerica':24 'style':17 'tango':8C,18
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['tango argentino', 'argentina', 'latin', 'oldies', 'tango']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528171.8475618  (2021-05-09 04:42:51)
                             'size'  3817954