======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '179'
                                          'artist'  'Gloria Gaynor'
                                     'text_people'  ''
                                         'release'  'The Hustle'
                                           'title'  'Never Can Say Goodbye'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['70s', 'female vocalists', 'soul', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'funk or soul;set-pl-billboard'
                                             'bpm'  '124.929'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Hustle'
'TBPM' (BPM (beats per minute))                     '124.929'
'TCON' (Content type, a.k.a. Genre)                 ['funk or soul', 'set-pl-billboard']
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Never Can Say Goodbye'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Gloria Gaynor'
'TXXX:Mp3gain_minmax'                               '113,190'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '04'
'TXXX:lastfmtags'                                   ['70s', 'female vocalists', 'soul', 'pop', 'disco']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.40 dB'
'TXXX:replaygain_track_peak'                        '0.515260'

========================== row from database ==========================
                                              'id'  1238451
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/[19XX] The Hustle/Gloria Gaynor - 04 - Never Can Say Goodbye.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  179
                                           'genre'  funk or soul;set-pl-billboard
                                        'filesize'  3599018
                                           'mtime'  1628357675
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul [19XX] 04 funk soul;set pl billboard
                                      'tag_artist'  Gloria Gaynor
                                     'tag_release'  The Hustle
                                       'tag_title'  Never Can Say Goodbye
                                             'bpm'  124.929
                                    'search_title'  'can':2 'goodbye':4 'never':1 'say':3
                                   'search_artist'  'gaynor':2 'gloria':1
                                  'search_release'  'hustle':2 'the':1
                                     'search_rest'  '19xx':4,5 'billboard':11 'funk':2 'pl':10 'set':7,9 'soul':3,6,8 'swing':1
                                    'search_combo'  '19xx':12,13 'billboard':19 'can':2A 'funk':10 'gaynor':6B 'gloria':5B 'goodbye':4A 'hustle':8C 'never':1A 'pl':18 'say':3A 'set':15,17 'soul':11,14,16 'swing':9 'the':7C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['70s', 'female vocalists', 'soul', 'pop', 'disco']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357674.6203778  (2021-08-07 19:34:34)
                             'size'  3599018