======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '330'
                                          'artist'  'John Coltrane'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Lush Life'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1963'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-experimental or free'
                                             'bpm'  '142.608'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.608'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-newer-experimental or free'
'TDRC' (Recording time)                             '1963'
'TIT2' (Title/songname/content description)         'Lush Life'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'John Coltrane'
'TXXX:Mp3gain_minmax'                               '000,195'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.89 dB'
'TXXX:replaygain_track_peak'                        '0.767344'

========================== row from database ==========================
                                              'id'  1342038
                                            'path'  /data/Music/Bulk/00poprockelectronic/John Coltrane/Coltrane & Hartman [1963]/John Coltrane and Johnny Hartman - 04 - Lush Life.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  330
                                           'genre'  prerock-jb-jazz-newer-experimental or free
                                        'filesize'  5284542
                                           'mtime'  1620570241
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic & Hartman [1963] and Johnny Hartman 04 prerock jb jazz newer experimental or free
                                      'tag_artist'  John Coltrane
                                     'tag_release'  None
                                       'tag_title'  Lush Life
                                             'bpm'  142.608
                                    'search_title'  'life':2 'lush':1
                                   'search_artist'  'coltrane':2 'john':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1963':3,4 'and':5 'experimental':11 'free':13 'hartman':2 'jazz':9 'jb':8 'johnny':6 'newer':10 'or':12 'prerock':7
                                    'search_combo'  '00poprockelectronic':5 '1963':7,8 'and':9 'coltrane':4B 'experimental':15 'free':17 'hartman':6 'jazz':13 'jb':12 'john':3B 'johnny':10 'life':2A 'lush':1A 'newer':14 'or':16 'prerock':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
                                        'tag_date'  1963
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620570240.9060776  (2021-05-09 16:24:00)
                             'size'  5284542