======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '182'
                                          'artist'  'Hamilton, Joe Frank & Reynolds'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  "Fallin' In Love"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['70s', 'soft rock', 'classic rock', 'rock', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '44'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '86.327'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '86.327'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "Fallin' In Love"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Hamilton, Joe Frank & Reynolds'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '44'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['70s', 'soft rock', 'classic rock', 'rock', 'folk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.609832'

========================== row from database ==========================
                                              'id'  1514072
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1975/044 - Hamilton, Joe Frank & Reynolds - Fallin_ In Love.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  182
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3642849
                                           'mtime'  1620385106
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1975 044 Fallin_ electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Hamilton, Joe Frank & Reynolds
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Fallin' In Love
                                             'bpm'  86.327
                                    'search_title'  'fallin':1,2 'in':3 'love':4
                                   'search_artist'  'frank':4 'hamilton':1,2 'joe':3 'reynolds':5
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1975':3 'billboard':14 'electronic':5 'fallin':4 'generic':6 'or':7 'pl':13 'radio':8 'set':10,12 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':16 '1':15C '1975':18 'billboard':10C,29 'electronic':20 'fallin':1A,2A,19 'frank':8B 'generic':21 'hamilton':5B,6B 'in':3A 'joe':7B 'love':4A 'of':14C 'or':22 'pl':28 'pop':12C 'radio':23 'reynolds':9B 'set':25,27 'singles':13C 'top':11C 'top100':17 'unsorted':24,26
                                    'tag_tracknum'  44
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['70s', 'soft rock', 'classic rock', 'rock', 'folk']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385105.6772842  (2021-05-07 12:58:25)
                             'size'  3642849