======================== unified (from filesystem) ========================
                                         'bitrate'  '250.456'
                                        'duration'  '183'
                                          'artist'  'Andy Rehfeldt'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Britney Spears-Circus(Metal Version)-bVmbHae2Ufk.mkv'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-4', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['death metal', 'jazz', 'metal', 'cover', 'parody']"
                                     'discogstags'  ("['classical', 'jazz', 'contemporary', 'art rock', 'rock', 'jazz-rock', "
 "'experimental']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'set-th-novelty-styledcovers;set-cover or covered'
                                             'bpm'  '115.2'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.2'
'TCON' (Content type, a.k.a. Genre)                 ['set-th-novelty-styledcovers', 'set-cover or covered']
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Britney Spears-Circus(Metal Version)-bVmbHae2Ufk.mkv'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Andy Rehfeldt'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:COMPATIBLE_BRANDS'                            'iso6avc1mp41'
'TXXX:MAJOR_BRAND'                                  'dash'
'TXXX:MINOR_VERSION'                                '0'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['classical',
 'jazz',
 'contemporary',
 'art rock',
 'rock',
 'jazz-rock',
 'experimental']
'TXXX:lastfmtags'                                   ['death metal', 'jazz', 'metal', 'cover', 'parody']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.64 dB'
'TXXX:replaygain_track_peak'                        '0.728323'

========================== row from database ==========================
                                              'id'  974300
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/AndyRehfeldt/Metal/Britney Spears-Circus(Metal Version)-bVmbHae2Ufk.mkv.mp3
                                         'working'  None
                                         'bitrate'  250
                                    'duration_sec'  183
                                           'genre'  set-th-novelty-styledcovers;set-cover or covered
                                        'filesize'  5757903
                                           'mtime'  1642256985
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm AndyRehfeldt set th novelty styledcovers;set cover or covered
                                      'tag_artist'  Andy Rehfeldt
                                     'tag_release'  None
                                       'tag_title'  Britney Spears-Circus(Metal Version)-bVmbHae2Ufk.mkv
                                             'bpm'  115.2
                                    'search_title'  'b':11 'britney':1 'bvmbhae2ufk':7 'circus':3 'hae2ufk':14 'hae2ufkmkv':16 'metal':4 'mkv':8,15 'spears':2 'spearscircusmetal':5 'version':6,10 'versionb':12 'versionbvmbhae2ufkmkv':9 'vmb':13
                                   'search_artist'  'andy':1 'rehfeldt':2
                                  'search_release'  
                                     'search_rest'  'andy':12 'andyrehfeldt':1 'cover':9 'covered':11 'novelty':4 'or':10 'rehfeldt':13 'set':2,6,8 'styledcovers':5,7 'th':3
                                    'search_combo'  'andy':17B,30 'andyrehfeldt':19 'b':11A 'britney':1A 'bvmbhae2ufk':7A 'circus':3A 'cover':27 'covered':29 'hae2ufk':14A 'hae2ufkmkv':16A 'metal':4A 'mkv':8A,15A 'novelty':22 'or':28 'rehfeldt':18B,31 'set':20,24,26 'spears':2A 'spearscircusmetal':5A 'styledcovers':23,25 'th':21 'version':6A,10A 'versionb':12A 'versionbvmbhae2ufkmkv':9A 'vmb':13A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HAP-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-4', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']
                                      'lastfmtags'  ['death metal', 'jazz', 'metal', 'cover', 'parody']
                                        'tag_date'  2010
                                     'discogstags'  ['classical', 'jazz', 'contemporary', 'art rock', 'rock', 'jazz-rock', 'experimental']

============================== file details ==============================
                                           'mtime'  1642256984.8898942  (2022-01-15 15:29:44)
                             'size'  5757903