======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '295'
                                          'artist'  'Vieja Trova Santiaguera'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'moliendo cafe'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['salsa', 'cuban', 'latin', 'world', 'cuba']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-style-latin'
                                             'bpm'  '90.210'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '90.210'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-latin'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'moliendo cafe'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Vieja Trova Santiaguera'
'TXXX:Mp3gain_minmax'                               '000,192'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['salsa', 'cuban', 'latin', 'world', 'cuba']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.28 dB'
'TXXX:replaygain_track_peak'                        '0.400708'

========================== row from database ==========================
                                              'id'  775470
                                            'path'  /data/Music/Bulk/00localcharacter/Latin/Vieja Trova Santiaguera/Vieja Trova Santiaguera - moliendo cafe.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  295
                                           'genre'  loc-style-latin
                                        'filesize'  4729115
                                           'mtime'  1620592739
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Latin loc style latin
                                      'tag_artist'  Vieja Trova Santiaguera
                                     'tag_release'  None
                                       'tag_title'  moliendo cafe
                                             'bpm'  90.21
                                    'search_title'  'cafe':2 'moliendo':1
                                   'search_artist'  'santiaguera':3 'trova':2 'vieja':1
                                  'search_release'  
                                     'search_rest'  'latin':1 'loc':2 'style':3
                                    'search_combo'  'cafe':2A 'latin':6 'loc':7 'moliendo':1A 'santiaguera':5B 'style':8 'trova':4B 'vieja':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['salsa', 'cuban', 'latin', 'world', 'cuba']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592738.693896  (2021-05-09 22:38:58)
                             'size'  4729115