======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '344'
                                          'artist'  'Charlie Kunz'
                                     'text_people'  ''
                                         'release'  'Decca M 33190'
                                           'title'  'Piano Medley Nr 102 (part 1 & 2)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  "['soundtrack', 'american', 'need to rate', 'scrobbled from vinyl', '3 stars']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '129.730'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca M 33190'
'TBPM' (BPM (beats per minute))                     '129.730'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'Piano Medley Nr 102 (part 1 & 2)'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Charlie Kunz'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'american', 'need to rate', 'scrobbled from vinyl', '3 stars']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.55 dB'
'TXXX:replaygain_track_peak'                        '0.939955'

========================== row from database ==========================
                                              'id'  1436986
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/Charlie Kunz - Piano Medley Nr 102 (part 1 & 2) 1950.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  344
                                           'genre'  prerock-swing
                                        'filesize'  6897498
                                           'mtime'  1620573967
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1950 1950 prerock swing
                                      'tag_artist'  Charlie Kunz
                                     'tag_release'  Decca M 33190
                                       'tag_title'  Piano Medley Nr 102 (part 1 & 2)
                                             'bpm'  129.73
                                    'search_title'  '1':7 '102':4 '2':8,9 'medley':2 'nr':3 'part':5,6 'piano':1
                                   'search_artist'  'charlie':1 'kunz':2
                                  'search_release'  '33190':3 'decca':1 'm':2
                                     'search_rest'  '00oldiepop':5 '1950':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':19 '1':7A '102':4A '1950':20 '2':8A,9A '33190':14C 'charlie':10B 'country':18 'decca':12C 'exotica':16 'jazz':15 'kunz':11B 'm':13C 'medley':2A 'nr':3A 'oldies':17 'part':5A,6A 'piano':1A 'prerock':21 'swing':22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['soundtrack', 'american', 'need to rate', 'scrobbled from vinyl', '3 stars']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573966.776302  (2021-05-09 17:26:06)
                             'size'  6897498