======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '186'
                                          'artist'  'Dave Evans'
                                     'text_people'  'Dave Evans/Geoff Muldaur'
                                         'release'  'Sad Pig Dance'
                                           'title'  "Medley Mole's Moan; The Gentle Man Trap"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'Q-PIANO-3', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-bluegrass'
                                             'bpm'  '144.438'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000012B 000000FD 00000959 0000079B 0000EA8E 0000EA8E 0000498A 000048CD '
 '000138C5 0000EA8E')
'TALB' (Album/Movie/Show title)                     'Sad Pig Dance'
'TBPM' (BPM (beats per minute))                     '144.438'
'TCOM' (Composer)                                   'Dave Evans/Geoff Muldaur'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-bluegrass'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'Acoustica Mp3 Cd Burner'
'TIT2' (Title/songname/content description)         "Medley Mole's Moan; The Gentle Man Trap"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Evans'
'TPE2' (Band/orchestra/accompaniment)               'Dave Evans'
'TPUB' (Publisher)                                  'Kicking Mule'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
'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'                                      '4'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.851742'

========================== row from database ==========================
                                              'id'  1509386
                                            'path'  /data/Music/Bulk/00localcharacter/dave evans - sad pig dance/07 Medley Mole_s Moan The Gentle Man Trap.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  186
                                           'genre'  loc-namerica-country-bluegrass
                                        'filesize'  6030747
                                           'mtime'  1621629917
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter dave evans sad pig dance 07 Mole_s loc namerica country bluegrass
                                      'tag_artist'  Dave Evans
                                     'tag_release'  Sad Pig Dance
                                       'tag_title'  Medley Mole's Moan; The Gentle Man Trap
                                             'bpm'  144.438
                                    'search_title'  'gentle':8 'man':9 'medley':1 'moan':5,6 'mole':2 'moles':4 's':3 'the':7 'trap':10
                                   'search_artist'  'dave':1 'evans':2
                                  'search_release'  'dance':3 'pig':2 'sad':1
                                     'search_rest'  'bluegrass':11 'country':10 'dance':5 'dave':1 'evans':2 'loc':8 'mole':6 'namerica':9 'pig':4 's':7 'sad':3
                                    'search_combo'  'bluegrass':26 'country':25 'dance':15C,20 'dave':11B,16 'evans':12B,17 'gentle':8A 'loc':23 'man':9A 'medley':1A 'moan':5A,6A 'mole':2A,21 'moles':4A 'namerica':24 'pig':14C,19 's':3A,22 'sad':13C,18 'the':7A 'trap':10A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
                                        'tag_date'  1974
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621629916.9240212  (2021-05-21 22:45:16)
                             'size'  6030747