======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '171'
                                          'artist'  'Bill Haley and his Comets'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Rockin' Chair On The Moon"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '50s']"
                                     'discogstags'  "['rock & roll', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '84.420'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.420'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1953'
'TIT2' (Title/songname/content description)         "Rockin' Chair On The Moon"
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Haley and his Comets'
'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:discogstags'                                  ['rock & roll', 'rock']
'TXXX:lastfmtags'                                   ['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '50s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.55 dB'
'TXXX:replaygain_track_peak'                        '0.466489'

========================== row from database ==========================
                                              'id'  1516426
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/Bill Haley and his Comets - Rockin_ Chair On The Moon 1953.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  171
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  3432242
                                           'mtime'  1622659455
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 Rockin_ 1953 rock pop early rocknroll
                                      'tag_artist'  Bill Haley and his Comets
                                     'tag_release'  None
                                       'tag_title'  Rockin' Chair On The Moon
                                             'bpm'  84.42
                                    'search_title'  'chair':3 'moon':6 'on':4 'rockin':1,2 'the':5
                                   'search_artist'  'and':3 'bill':1 'comets':5 'haley':2 'his':4
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1953':6 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8 'rockin':7 'rocknroll':11
                                    'search_combo'  '00oldiepop':16 '1953':17 'and':9B 'bill':7B 'chair':3A 'comets':11B 'country':15 'early':21 'exotica':13 'haley':8B 'his':10B 'jazz':12 'moon':6A 'oldies':14 'on':4A 'pop':20 'rock':19 'rockin':1A,2A,18 'rocknroll':22 'the':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '50s']
                                        'tag_date'  1953
                                     'discogstags'  ['rock & roll', 'rock']

============================== file details ==============================
                                           'mtime'  1622659454.7399838  (2021-06-02 20:44:14)
                             'size'  3432242