======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '201'
                                          'artist'  'No Angels'
                                     'text_people'  ''
                                         'release'  "Elle'ments"
                                           'title'  'Promises Can Wait'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['german', 'girl groups', 'dance', 'female vocalists', 'pop']"
                                     'discogstags'  "['pop', 'ballad', 'europop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '112.010'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Love'
'TALB' (Album/Movie/Show title)                     "Elle'ments"
'TBPM' (BPM (beats per minute))                     '112.010'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Promises Can Wait'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'No Angels'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'ballad', 'europop', 'vocal']
'TXXX:lastfmtags'                                   ['german', 'girl groups', 'dance', 'female vocalists', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.73 dB'
'TXXX:replaygain_track_peak'                        '0.516852'

========================== row from database ==========================
                                              'id'  1506926
                                            'path'  /data/Music/Bulk/00poprockelectronic/No Angels/No Angels__Elle_ Ments__MBZ;#No Angels;#ELLE MENTS;#03;#Promises Can Wait.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  201
                                           'genre'  electronic-generic or radio
                                        'filesize'  3231516
                                           'mtime'  1630248726
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Angels__Elle_ Ments__MBZ;#No Angels;#ELLE MENTS;#03;#Promises electronic generic or radio
                                      'tag_artist'  No Angels
                                     'tag_release'  Elle'ments
                                       'tag_title'  Promises Can Wait
                                             'bpm'  112.01
                                    'search_title'  'can':2 'promises':1 'wait':3
                                   'search_artist'  'angels':2 'no':1
                                  'search_release'  'elle':1 'ellements':3 'ments':2
                                     'search_rest'  '00poprockelectronic':1 '03':15,18 'angels':2,10,12 'electronic':20 'elle':3,11,13 'generic':21 'mbz':5,8 'ments':4,7,14,17 'no':6,9 'or':22 'promises':16,19 'radio':23
                                    'search_combo'  '00poprockelectronic':9 '03':23,26 'angels':5B,10,18,20 'can':2A 'electronic':28 'elle':6C,11,19,21 'ellements':8C 'generic':29 'mbz':13,16 'ments':7C,12,15,22,25 'no':4B,14,17 'or':30 'promises':1A,24,27 'radio':31 'wait':3A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'girl groups', 'dance', 'female vocalists', 'pop']
                                        'tag_date'  2001
                                     'discogstags'  ['pop', 'ballad', 'europop', 'vocal']

============================== file details ==============================
                                           'mtime'  1630248725.7590165  (2021-08-29 16:52:05)
                             'size'  3231516