======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '120'
                                          'artist'  'Alan Price Set'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'pop', '60s', 'greatrockers', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '104.9'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '104.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '2005'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Alan Price Set'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'TXXX:ALBUM'                                        'Hammond Heroes: 60s R&B Organ Grooves'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:TITLE'                                        ["Critic's Choice", 'Critics Choice']
'TXXX:lastfmtags'                                   ['rock', 'pop', '60s', 'greatrockers', 'pop rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.86 dB'
'TXXX:replaygain_track_peak'                        '0.501567'

========================== row from database ==========================
                                              'id'  1501531
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Spencer Davis Group Mk. II - VA - Hammond Heroes - 60s R&B Organ Grooves/14 - Critic_s Choice.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  120
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3854208
                                           'mtime'  1620535440
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Spencer Davis Group Mk. II VA Hammond Heroes 60s R&B Organ Grooves 14 Critic_s Choice prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Alan Price Set
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  104.9
                                    'search_title'  None
                                   'search_artist'  'alan':1 'price':2 'set':3
                                  'search_release'  
                                     'search_rest'  '60s':14 'b':16 'bossa':27 'choice':22 'country':4 'critic':20 'davis':6 'exotica':2 'grooves':19 'group':7 'hammond':12 'heroes':13 'ii':10 'jazz':1 'jb':24 'lounge':25 'mk':8,9 'oldies':3 'or':26 'organ':18 'prerock':23 'r':15 'rb':17 's':21 'spencer':5 'va':11
                                    'search_combo'  '60s':17 'alan':1B 'b':19 'bossa':30 'choice':25 'country':7 'critic':23 'davis':9 'exotica':5 'grooves':22 'group':10 'hammond':15 'heroes':16 'ii':13 'jazz':4 'jb':27 'lounge':28 'mk':11,12 'oldies':6 'or':29 'organ':21 'prerock':26 'price':2B 'r':18 'rb':20 's':24 'set':3B 'spencer':8 'va':14
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['rock', 'pop', '60s', 'greatrockers', 'pop rock']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535440.0990586  (2021-05-09 06:44:00)
                             'size'  3854208