======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '150'
                                          'artist'  'Sam & Dave'
                                     'text_people'  ''
                                         'release'  "Hold On, I'm Comin'"
                                           'title'  "Hold On, I'm Comin'"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-3', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'funk', 'rhythm and blues', 'soul', '60s']"
                                     'discogstags'  "['funk / soul', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '106.252'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Hold On, I'm Comin'"
'TBPM' (BPM (beats per minute))                     '106.252'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TIT2' (Title/songname/content description)         "Hold On, I'm Comin'"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sam & Dave'
'TRCK' (Track number/Position in set)               '1'
'TXXX:DATE'                                         '1966'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'soul']
'TXXX:lastfmtags'                                   ['oldies', 'funk', 'rhythm and blues', 'soul', '60s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.25 dB'
'TXXX:replaygain_track_peak'                        '0.638159'

========================== row from database ==========================
                                              'id'  1533255
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Sam & Dave - Hold On I_m Coming/01 - Hold On, I_m Comin_.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  150
                                           'genre'  funk or soul
                                        'filesize'  2415867
                                           'mtime'  1628357895
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul I_m Coming 01 I_m Comin_ funk or soul
                                      'tag_artist'  Sam & Dave
                                     'tag_release'  Hold On, I'm Comin'
                                       'tag_title'  Hold On, I'm Comin'
                                             'bpm'  106.252
                                    'search_title'  'comin':7,8 'hold':1 'i':4 'im':6 'm':5 'on':2,3
                                   'search_artist'  'dave':2 'sam':1
                                  'search_release'  'comin':7,8 'hold':1 'i':4 'im':6 'm':5 'on':2,3
                                     'search_rest'  'comin':7 'coming':6 'funk':2 'i':4 'm':5 'or':8 'soul':3 'swing':1
                                    'search_combo'  'comin':7A,8A,17C,18C,25 'coming':24 'dave':10B 'funk':20 'hold':1A,11C 'i':4A,14C,22 'im':6A,16C 'm':5A,15C,23 'on':2A,3A,12C,13C 'or':26 'sam':9B 'soul':21 'swing':19
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'funk', 'rhythm and blues', 'soul', '60s']
                                        'tag_date'  1966
                                     'discogstags'  ['funk / soul', 'soul']

============================== file details ==============================
                                           'mtime'  1628357895.363214  (2021-08-07 19:38:15)
                             'size'  2415867