======================== unified (from filesystem) ========================
                                         'bitrate'  '79.298'
                                        'duration'  '171'
                                          'artist'  'Mable John'
                                     'text_people'  ''
                                         'release'  'Dimitri - Soul'
                                           'title'  'Same Time Same Place'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-JZFKS-3', 'Q-UNU-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-2', "
 "'Q-CHART-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['soul', 'blues', 'rhythm and blues', 'motown', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '144.2'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Soul'
'TBPM' (BPM (beats per minute))                     '144.2'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TIT2' (Title/songname/content description)         'Same Time Same Place'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Mable John'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'isomiso2mp41'
'TXXX:lastfmtags'                                   ['soul', 'blues', 'rhythm and blues', 'motown', 'female vocalists']
'TXXX:major_brand'                                  'isom'
'TXXX:minor_version'                                '512'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.38 dB'
'TXXX:replaygain_track_peak'                        '0.441879'

========================== row from database ==========================
                                              'id'  1477124
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/Soul/Mable John   Same Time Same Place-FreZOjd9Zig.mp3
                                         'working'  None
                                         'bitrate'  79
                                    'duration_sec'  171
                                           'genre'  funk or soul
                                        'filesize'  1699865
                                           'mtime'  1628357632
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm FreZOjd9Zig funk or soul
                                      'tag_artist'  Mable John
                                     'tag_release'  Dimitri - Soul
                                       'tag_title'  Same Time Same Place
                                             'bpm'  144.2
                                    'search_title'  'place':3 'same':1 'time':2
                                   'search_artist'  'john':2 'mable':1
                                  'search_release'  'dimitri':1 'soul':2
                                     'search_rest'  'fre':5 'frezojd9zig':1 'funk':2 'or':3 'soul':4 'zojd9zig':6
                                    'search_combo'  'dimitri':6C 'fre':12 'frezojd9zig':8 'funk':9 'john':5B 'mable':4B 'or':10 'place':3A 'same':1A 'soul':7C,11 'time':2A 'zojd9zig':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2']
                                      'lastfmtags'  ['soul', 'blues', 'rhythm and blues', 'motown', 'female vocalists']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357632.2078724  (2021-08-07 19:33:52)
                             'size'  1699865