======================== unified (from filesystem) ========================
                                         'bitrate'  '198.241'
                                        'duration'  '180'
                                          'artist'  'Imogen Heap'
                                     'text_people'  ''
                                         'release'  'Speak for Yourself'
                                           'title'  'Just for Now'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-4', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['indie', 'electronic', 'alternative', 'female vocalists', 'singer "
 "songwriter']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '143.619'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Speak for Yourself'
'TBPM' (BPM (beats per minute))                     '143.619'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Just for Now'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Imogen Heap'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'electronic', 'alternative', 'female vocalists', 'singer songwriter']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.44 dB'
'TXXX:replaygain_track_peak'                        '0.373712'

========================== row from database ==========================
                                              'id'  1344184
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Imogen Heap/09.Just For Now.mp3
                                         'working'  None
                                         'bitrate'  198
                                    'duration_sec'  180
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  4474440
                                           'mtime'  1636910617
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip 09.Just For electronic trip hop downtempo acid jazz
                                      'tag_artist'  Imogen Heap
                                     'tag_release'  Speak for Yourself
                                       'tag_title'  Just for Now
                                             'bpm'  143.619
                                    'search_title'  'for':2 'just':1 'now':3
                                   'search_artist'  'heap':2 'imogen':1
                                  'search_release'  'for':2 'speak':1 'yourself':3
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '09':3 '09just':5 'acid':11 'downtempo':10 'electronic':7 'for':6 'hop':9 'jazz':12 'just':4 'trip':8
                                    'search_combo'  '00poprockelectronic':9 '00trip':10 '09':11 '09just':13 'acid':19 'downtempo':18 'electronic':15 'for':2A,7C,14 'heap':5B 'hop':17 'imogen':4B 'jazz':20 'just':1A,12 'now':3A 'speak':6C 'trip':16 'yourself':8C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'electronic', 'alternative', 'female vocalists', 'singer songwriter']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910617.3326793  (2021-11-14 18:23:37)
                             'size'  4474440