======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '280'
                                          'artist'  'Bleep'
                                     'text_people'  ''
                                         'release'  'Datenbergbau'
                                           'title'  'S.I.F.'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['electronica', 'ambient', 'idm', '77davez all tracks', 'electronic', "
 "'experimental']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '90.8'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Datenbergbau'
'TBPM' (BPM (beats per minute))                     '90.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'S.I.F.'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bleep'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica',
 'ambient',
 'idm',
 '77davez all tracks',
 'electronic',
 'experimental']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.564007'

========================== row from database ==========================
                                              'id'  724365
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Comfort Stand/csr042/csr042_bleep_3_sif.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  280
                                           'genre'  electronic-experimental
                                        'filesize'  6739840
                                           'mtime'  1636916835
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Comfort Stand csr042 csr042_bleep_3_sif electronic experimental
                                      'tag_artist'  Bleep
                                     'tag_release'  Datenbergbau
                                       'tag_title'  S.I.F.
                                             'bpm'  90.8
                                    'search_title'  'f':3 'i':2 's':1 'sif':4
                                   'search_artist'  'bleep':1
                                  'search_release'  'datenbergbau':1
                                     'search_rest'  '3':6 'bleep':5 'comfort':1 'csr042':3,4 'electronic':8 'experimental':9 'sif':7 'stand':2
                                    'search_combo'  '3':12 'bleep':5B,11 'comfort':7 'csr042':9,10 'datenbergbau':6C 'electronic':14 'experimental':15 'f':3A 'i':2A 's':1A 'sif':4A,13 'stand':8
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'ambient', 'idm', '77davez all tracks', 'electronic', 'experimental']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636916834.5602748  (2021-11-14 20:07:14)
                             'size'  6739840