======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '260'
                                          'artist'  'Mecano'
                                     'text_people'  ''
                                         'release'  'Descanso dominical'
                                           'title'  'Hijo de la luna'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-vocals-4', 'q-mixbeat-2', 'Q-PIANO-2']")
                                      'lastfmtags'  "['80s', 'female vocalists', 'spanish pop', 'pop', 'spanish']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '119.688'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Romantic; Chillout; Summer;'
'TALB' (Album/Movie/Show title)                     'Descanso dominical'
'TBPM' (BPM (beats per minute))                     '119.688'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Hijo de la luna'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mecano'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'female vocalists', 'spanish pop', 'pop', 'spanish']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.38 dB'
'TXXX:replaygain_track_peak'                        '0.607384'

========================== row from database ==========================
                                              'id'  1318909
                                            'path'  /data/Music/Bulk/00poprockelectronic/Mecano/Mecano__Descanso Dominical__01 - Hijo De La Luna.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  260
                                           'genre'  electronic-unsorted
                                        'filesize'  6245286
                                           'mtime'  1620571236
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Mecano__Descanso Dominical__01 La Luna electronic unsorted
                                      'tag_artist'  Mecano
                                     'tag_release'  Descanso dominical
                                       'tag_title'  Hijo de la luna
                                             'bpm'  119.688
                                    'search_title'  'de':2 'hijo':1 'la':3 'luna':4
                                   'search_artist'  'mecano':1
                                  'search_release'  'descanso':1 'dominical':2
                                     'search_rest'  '00poprockelectronic':1 '01':5 'descanso':3 'dominical':4 'electronic':8 'la':6 'luna':7 'mecano':2 'unsorted':9
                                    'search_combo'  '00poprockelectronic':8 '01':12 'de':2A 'descanso':6C,10 'dominical':7C,11 'electronic':15 'hijo':1A 'la':3A,13 'luna':4A,14 'mecano':5B,9 'unsorted':16
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'female vocalists', 'spanish pop', 'pop', 'spanish']
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620571236.17923  (2021-05-09 16:40:36)
                             'size'  6245286