======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '178'
                                          'artist'  'Stray Cats'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Runaway Boys'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock n roll', 'psychobilly', 'rockabilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '88.7'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'POPM:\x01ÿþ0'                                      POPM(email='\x01ÿþ0', rating=153, count=0)
'TBPM' (BPM (beats per minute))                     '88.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Runaway Boys'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stray Cats'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'rock n roll', 'psychobilly', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.504974'

========================== row from database ==========================
                                              'id'  1290868
                                            'path'  /data/Music/Bulk/00poprockelectronic/Stray Cats/Stray Cats__MBZ;#Stray Cats;#Greatest Hits;#06;#Runaway Boys.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  178
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  4299668
                                           'mtime'  1620525898
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Cats__MBZ;#Stray Cats;#Greatest Hits;#06;#Runaway rock rockabilly or psychobilly
                                      'tag_artist'  Stray Cats
                                     'tag_release'  None
                                       'tag_title'  Runaway Boys
                                             'bpm'  88.7
                                    'search_title'  'boys':2 'runaway':1
                                   'search_artist'  'cats':2 'stray':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '06':13,16 'cats':2,5,8,10 'greatest':9,11 'hits':12,15 'mbz':3,6 'or':20 'psychobilly':21 'rock':18 'rockabilly':19 'runaway':14,17 'stray':4,7
                                    'search_combo'  '00poprockelectronic':5 '06':17,20 'boys':2A 'cats':4B,6,9,12,14 'greatest':13,15 'hits':16,19 'mbz':7,10 'or':24 'psychobilly':25 'rock':22 'rockabilly':23 'runaway':1A,18,21 'stray':3B,8,11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'rock n roll', 'psychobilly', 'rockabilly', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525897.8431473  (2021-05-09 04:04:57)
                             'size'  4299668