======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '283'
                                          'artist'  'David Allen'
                                     'text_people'  ''
                                         'release'  'Getting Things Done Fast (Disc 2)'
                                           'title'  'Dealing with "stuff"'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['free jazz', 'productivity', 'jazz', 'gtd', 'audiobook']"
                                     'discogstags'  "['progressive house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '10'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'nonmusic-speech-instruction'
                                             'bpm'  '130.566'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Getting Things Done Fast (Disc 2)'
'TBPM' (BPM (beats per minute))                     '130.566'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-speech-instruction'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Dealing with "stuff"'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Allen'
'TRCK' (Track number/Position in set)               '1/10'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, LAME dll 3.97, 64 Kbit/s, Mono, Voice quality'
'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:discogstags'                                  ['progressive house', 'electronic']
'TXXX:lastfmtags'                                   ['free jazz', 'productivity', 'jazz', 'gtd', 'audiobook']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.84 dB'
'TXXX:replaygain_track_peak'                        '0.730251'

========================== row from database ==========================
                                              'id'  292857
                                            'path'  /data/Music/Bulk/0nonmusic/Getting Things Done Fast/GTDFast02 - 01 - Dealing with -stuff-.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  283
                                           'genre'  nonmusic-speech-instruction
                                        'filesize'  2274305
                                           'mtime'  1620562183
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic GTDFast02 01 nonmusic speech instruction
                                      'tag_artist'  David Allen
                                     'tag_release'  Getting Things Done Fast (Disc 2)
                                       'tag_title'  Dealing with "stuff"
                                             'bpm'  130.566
                                    'search_title'  'dealing':1 'stuff':3 'with':2
                                   'search_artist'  'allen':2 'david':1
                                  'search_release'  '2':7,8 'disc':5,6 'done':3 'fast':4 'getting':1 'things':2
                                     'search_rest'  '0nonmusic':1 'gtdfast02':2 'instruction':5 'nonmusic':3 'speech':4
                                    'search_combo'  '0nonmusic':14 '2':12C,13C 'allen':5B 'david':4B 'dealing':1A 'disc':10C,11C 'done':8C 'fast':9C 'getting':6C 'gtdfast02':15 'instruction':18 'nonmusic':16 'speech':17 'stuff':3A 'things':7C 'with':2A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['free jazz', 'productivity', 'jazz', 'gtd', 'audiobook']
                                        'tag_date'  2002
                                     'discogstags'  ['progressive house', 'electronic']

============================== file details ==============================
                                           'mtime'  1620562182.5503252  (2021-05-09 14:09:42)
                             'size'  2274305