======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '97'
                                          'artist'  'Dave Evans'
                                     'text_people'  ''
                                         'release'  'Sad Pig Dance'
                                           'title'  'Sad Pig Dance'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-bluegrass;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '90.858'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '14+7003770E6EA90448FAA442BAC'
'COMM:iTunes_CDDB_IDs:eng'                          '14+7003770E6EA90448FAA442BACD4D3581+10480045'
'TALB' (Album/Movie/Show title)                     'Sad Pig Dance'
'TBPM' (BPM (beats per minute))                     '90.858'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-country-bluegrass', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         'Sad Pig Dance'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Evans'
'TPE2' (Band/orchestra/accompaniment)               'Dave Evans'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.74 dB'
'TXXX:replaygain_track_peak'                        '0.537540'

========================== row from database ==========================
                                              'id'  745917
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/KM 120 Dave Evans - 1974 Sad Pig Dance @320/08 - sad pig dance.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  97
                                           'genre'  loc-namerica-country-bluegrass;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3937528
                                           'mtime'  1621627993
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country KM 120 1974 @320 08 sad pig dance loc namerica country bluegrass;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Dave Evans
                                     'tag_release'  Sad Pig Dance
                                       'tag_title'  Sad Pig Dance
                                             'bpm'  90.858
                                    'search_title'  'dance':3 'pig':2 'sad':1
                                   'search_artist'  'dave':1 'evans':2
                                  'search_release'  'dance':3 'pig':2 'sad':1
                                     'search_rest'  '120':6 '1974':7 '320':8 'bluegrass':14,16 'country':4 'dance':11 'exotica':2 'jazz':1 'km':5 'loc':12 'mor':23 'namerica':13 'oldies':3 'pig':10 'pl':18 'sad':9 'set':15,17,20,22 'shirleyspinoza':19,21
                                    'search_combo'  '120':14 '1974':15 '320':16 'bluegrass':22,24 'country':12 'dance':3A,8C,19 'dave':4B 'evans':5B 'exotica':10 'jazz':9 'km':13 'loc':20 'mor':31 'namerica':21 'oldies':11 'pig':2A,7C,18 'pl':26 'sad':1A,6C,17 'set':23,25,28,30 'shirleyspinoza':27,29
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
                                        'tag_date'  1974
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621627993.0865514  (2021-05-21 22:13:13)
                             'size'  3937528