======================== unified (from filesystem) ========================
                                         'bitrate'  '194.827'
                                        'duration'  '185'
                                          'artist'  'Magnolia Electric Co.'
                                     'text_people'  ''
                                         'release'  'Fading trails'
                                           'title'  'a little at a time'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alt country', 'americana', 'folk', 'indie rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-alt'
                                             'bpm'  '137.758'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Fading trails'
'TBPM' (BPM (beats per minute))                     '137.758'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-alt'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'a little at a time'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Magnolia Electric Co.'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'alt country', 'americana', 'folk', 'indie rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.15 dB'
'TXXX:replaygain_track_peak'                        '0.693073'

========================== row from database ==========================
                                              'id'  1267097
                                            'path'  /data/Music/Bulk/00localcharacter/Magnolia Electric Co. - Magnolia Electric Co/Fading Trails/04 a little at a time.mp3
                                         'working'  None
                                         'bitrate'  194
                                    'duration_sec'  185
                                           'genre'  loc-namerica-country-alt
                                        'filesize'  4553004
                                           'mtime'  1621629743
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Trails 04 loc namerica country alt
                                      'tag_artist'  Magnolia Electric Co.
                                     'tag_release'  Fading trails
                                       'tag_title'  a little at a time
                                             'bpm'  137.758
                                    'search_title'  'a':1 'at':3 'little':2 'time':4
                                   'search_artist'  'co':3,4 'electric':2 'magnolia':1
                                  'search_release'  'fading':1 'trails':2
                                     'search_rest'  'alt':5 'country':4 'loc':2 'namerica':3 'trails':1
                                    'search_combo'  'a':1A 'alt':15 'at':3A 'co':7B,8B 'country':14 'electric':6B 'fading':9C 'little':2A 'loc':12 'magnolia':5B 'namerica':13 'time':4A 'trails':10C,11
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alt country', 'americana', 'folk', 'indie rock']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621629742.5631862  (2021-05-21 22:42:22)
                             'size'  4553004