======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '145'
                                          'artist'  'The Everly Brothers'
                                     'text_people'  'Don Everly'
                                         'release'  'Cadence Classics: Their 20 Greatest Hits'
                                           'title'  "('Til) I Kissed You"
                                           '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-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-1', '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'  '16'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '139.948'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-037 POS 4'
'COMM:ID3v1 Comment:XXX'                            '59-037 POS 4'
'TALB' (Album/Movie/Show title)                     'Cadence Classics: Their 20 Greatest Hits'
'TBPM' (BPM (beats per minute))                     '139.948'
'TCOM' (Composer)                                   'Don Everly'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "('Til) I Kissed You"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Everly Brothers'
'TPE2' (Band/orchestra/accompaniment)               'The Everly Brothers'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '16'
'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'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.74 dB'
'TXXX:replaygain_track_peak'                        '0.575480'

========================== row from database ==========================
                                              'id'  1515260
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-037 - Everly Brothers - (_Til) I Kissed You.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  145
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  5810059
                                           'mtime'  1622659477
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 037 (_Til) rock pop early rocknroll
                                      'tag_artist'  The Everly Brothers
                                     'tag_release'  Cadence Classics: Their 20 Greatest Hits
                                       'tag_title'  ('Til) I Kissed You
                                             'bpm'  139.948
                                    'search_title'  'i':3 'kissed':4 'til':1,2 'you':5
                                   '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 '1959':6 '59':7 'country':4 'early':12 'exotica':2 'jazz':1 'oldies':3 'pop':11 'rock':10 'rocknroll':13 'til':8,9
                                    'search_combo'  '00oldiepop':20 '1959':21 '20':13C '59':22 'brothers':8B 'cadence':9C 'classics':10C,11C 'country':19 'early':27 'everly':7B 'exotica':17 'greatest':14C 'hits':15C 'i':3A 'jazz':16 'kissed':4A 'oldies':18 'pop':26 'rock':25 'rocknroll':28 'the':6B 'their':12C 'til':1A,2A,23,24 'you':5A
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  3A
                                           '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-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['oldies', '60s', 'rock n roll', 'pop', 'rock and roll', '50s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659476.867908  (2021-06-02 20:44:36)
                             'size'  5810059