======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '194'
                                          'artist'  'Aqua'
                                     'text_people'  ''
                                         'release'  '20 worst pop songs'
                                           'title'  'Barbie Girl'
                                           'quals'  ("['Q-SYN-3', 'Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'eurodance', 'europop', 'pop', '90s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-th-ent-eurodance'
                                             'bpm'  '130.063'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '20 worst pop songs'
'TBPM' (BPM (beats per minute))                     '130.063'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-ent-eurodance'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Barbie Girl'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aqua'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '068,186'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '02'
'TXXX:lastfmtags'                                   ['dance', 'eurodance', 'europop', 'pop', '90s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.63 dB'
'TXXX:replaygain_track_peak'                        '0.491098'

========================== row from database ==========================
                                              'id'  1357760
                                            'path'  /data/Music/Bulk/00poprockelectronic/20 WORST POP SONGS/02. Aqua - Barbie Girl.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  194
                                           'genre'  electronic-th-ent-eurodance
                                        'filesize'  3106971
                                           'mtime'  1639511336
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic WORST POP SONGS 02. electronic th ent eurodance
                                      'tag_artist'  Aqua
                                     'tag_release'  20 worst pop songs
                                       'tag_title'  Barbie Girl
                                             'bpm'  130.063
                                    'search_title'  'barbie':1 'girl':2
                                   'search_artist'  'aqua':1
                                  'search_release'  '20':1 'pop':3 'songs':4 'worst':2
                                     'search_rest'  '00poprockelectronic':1 '02':5,6 'electronic':7 'ent':9 'eurodance':10 'pop':3 'songs':4 'th':8 'worst':2
                                    'search_combo'  '00poprockelectronic':8 '02':12,13 '20':4C 'aqua':3B 'barbie':1A 'electronic':14 'ent':16 'eurodance':17 'girl':2A 'pop':6C,10 'songs':7C,11 'th':15 'worst':5C,9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'Q-SYN-3', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'eurodance', 'europop', 'pop', '90s']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1639511336.2798805  (2021-12-14 20:48:56)
                             'size'  3106971