======================== unified (from filesystem) ========================
                                         'bitrate'  '188.108'
                                        'duration'  '254'
                                          'artist'  'Otros Aires'
                                     'text_people'  ''
                                         'release'  'plastictango new'
                                           'title'  'Otra Noche En "La Viruta"'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['tango nuevo', 'electrotango', 'electronic', 'neotango', 'tango']"
                                     'discogstags'  "['latin', 'tango']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga;loc-unsorted'
                                             'bpm'  '90.010'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'plastictango new'
'TBPM' (BPM (beats per minute))                     '90.010'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-tango or milonga', 'loc-unsorted']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Otra Noche En "La Viruta"'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Otros Aires'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:MP3GAIN_MINMAX'                               '137,249'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['latin', 'tango']
'TXXX:lastfmtags'                                   ['tango nuevo', 'electrotango', 'electronic', 'neotango', 'tango']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.404438'

========================== row from database ==========================
                                              'id'  246811
                                            'path'  /data/Music/Bulk/00localcharacter/plastictango/new/new!! 17.mp3
                                         'working'  None
                                         'bitrate'  188
                                    'duration_sec'  254
                                           'genre'  loc-style-tango or milonga;loc-unsorted
                                        'filesize'  5984256
                                           'mtime'  1620528441
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter new!! 17 loc style or milonga;loc unsorted
                                      'tag_artist'  Otros Aires
                                     'tag_release'  plastictango new
                                       'tag_title'  Otra Noche En "La Viruta"
                                             'bpm'  90.01
                                    'search_title'  'en':3 'la':4 'noche':2 'otra':1 'viruta':5
                                   'search_artist'  'aires':2 'otros':1
                                  'search_release'  'new':2 'plastictango':1
                                     'search_rest'  'loc':2,6,8 'milonga':5,7 'new':1 'or':4 'style':3 'unsorted':9
                                    'search_combo'  'aires':7B 'en':3A 'la':4A 'loc':11,15,17 'milonga':14,16 'new':9C,10 'noche':2A 'or':13 'otra':1A 'otros':6B 'plastictango':8C 'style':12 'unsorted':18 'viruta':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['tango nuevo', 'electrotango', 'electronic', 'neotango', 'tango']
                                        'tag_date'  2007
                                     'discogstags'  ['latin', 'tango']

============================== file details ==============================
                                           'mtime'  1620528440.808712  (2021-05-09 04:47:20)
                             'size'  5984256