======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '139'
                                          'artist'  'Betty Johnson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "You Can't Get To Heaven On Roller Skates"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hot rockin girl', 'entschleunigen', '50s', 'rockabilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  '18'
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '86.217'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-568 POS 99'
'COMM:ID3v1 Comment:XXX'                            '59-568 POS 99'
'TBPM' (BPM (beats per minute))                     '86.217'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1959'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Sicherer Modus)'
'TIT2' (Title/songname/content description)         "You Can't Get To Heaven On Roller Skates"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Betty Johnson'
'TRCK' (Track number/Position in set)               '05/18'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['hot rockin girl', 'entschleunigen', '50s', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '+0.93 dB'
'TXXX:replaygain_track_peak'                        '0.489360'

========================== row from database ==========================
                                              'id'  1509070
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-568 - Betty Johnson - You Can_t Get To Heaven On Roller Skates.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  139
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  5598666
                                           'mtime'  1621853367
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 568 Can_t rock pop early rockabilly
                                      'tag_artist'  Betty Johnson
                                     'tag_release'  None
                                       'tag_title'  You Can't Get To Heaven On Roller Skates
                                             'bpm'  86.217
                                    'search_title'  'can':2 'cant':4 'get':5 'heaven':7 'on':8 'roller':9 'skates':10 't':3 'to':6 'you':1
                                   'search_artist'  'betty':1 'johnson':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1959':6 '568':8 '59':7 'can':9 'country':4 'early':13 'exotica':2 'jazz':1 'oldies':3 'pop':12 'rock':11 'rockabilly':14 't':10
                                    'search_combo'  '00oldiepop':17 '1959':18 '568':20 '59':19 'betty':11B 'can':2A,21 'cant':4A 'country':16 'early':25 'exotica':14 'get':5A 'heaven':7A 'jazz':13 'johnson':12B 'oldies':15 'on':8A 'pop':24 'rock':23 'rockabilly':26 'roller':9A 'skates':10A 't':3A,22 'to':6A 'you':1A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['hot rockin girl', 'entschleunigen', '50s', 'rockabilly', 'rock']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853367.429633  (2021-05-24 12:49:27)
                             'size'  5598666