======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '134'
                                          'artist'  'The Everly Brothers'
                                     'text_people'  ''
                                         'release'  'Cadence Classics: Their 20 Greatest Hits'
                                           'title'  'I Wonder If I Care As Much'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'rock n roll', 'pop', 'rock and roll', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '023b'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '141.216'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Cadence Classics: Their 20 Greatest Hits'
'TBPM' (BPM (beats per minute))                     '141.216'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'I Wonder If I Care As Much'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Everly Brothers'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '023b'
'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'                                   ['oldies', '60s', 'rock n roll', 'pop', 'rock and roll', '50s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+0.25 dB'
'TXXX:replaygain_track_peak'                        '0.512895'

========================== row from database ==========================
                                              'id'  1438970
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-023b - The Everly Brothers - I Wonder If I Care As Much.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  134
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  5375872
                                           'mtime'  1622659469
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 023b rock pop early rocknroll
                                      'tag_artist'  The Everly Brothers
                                     'tag_release'  Cadence Classics: Their 20 Greatest Hits
                                       'tag_title'  I Wonder If I Care As Much
                                             'bpm'  141.216
                                    'search_title'  'as':5 'care':4 'i':1 'if':3 'much':6 'wonder':2
                                   'search_artist'  'brothers':3 'everly':2 'the':1
                                  'search_release'  '20':5 'cadence':1 'classics':2,3 'greatest':6 'hits':7 'their':4
                                     'search_rest'  '00oldiepop':5 '023b':7 '1957':6 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8 'rocknroll':11
                                    'search_combo'  '00oldiepop':21 '023b':23 '1957':22 '20':14C 'as':5A 'brothers':9B 'cadence':10C 'care':4A 'classics':11C,12C 'country':20 'early':26 'everly':8B 'exotica':18 'greatest':15C 'hits':16C 'i':1A 'if':3A 'jazz':17 'much':6A 'oldies':19 'pop':25 'rock':24 'rocknroll':27 'the':7B 'their':13C 'wonder':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['oldies', '60s', 'rock n roll', 'pop', 'rock and roll', '50s']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659469.1978111  (2021-06-02 20:44:29)
                             'size'  5375872