======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '319'
                                          'artist'  'Sense'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'icy-l-tap'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-4', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'glitch', 'idm', 'ambient', 'netlabel', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-we-beeps or chip or pico'
                                             'bpm'  '90.1'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '90.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-beeps or chip or pico'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'icy-l-tap'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sense'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '067,203'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'glitch', 'idm', 'ambient', 'netlabel', 'electronic']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.35 dB'
'TXXX:replaygain_track_peak'                        '0.531847'

========================== row from database ==========================
                                              'id'  151671
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/monotonik/monotonik-archives-vol-1/[mtk068]-sense-icy-l-tap.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  319
                                           'genre'  electronic-we-beeps or chip or pico
                                        'filesize'  5109332
                                           'mtime'  1621705432
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm monotonik monotonik archives vol 1 [mtk068] sense electronic we beeps or chip or pico
                                      'tag_artist'  Sense
                                     'tag_release'  None
                                       'tag_title'  icy-l-tap
                                             'bpm'  90.1
                                    'search_title'  'icy':1 'icyltap':4 'l':2 'tap':3
                                   'search_artist'  'sense':1
                                  'search_release'  
                                     'search_rest'  '1':4 'archives':2 'beeps':10 'chip':12 'electronic':8 'monotonik':1 'mtk068':5,6 'or':11 'pico':13 'sense':7 'vol':3 'we':9
                                    'search_combo'  '1':9 'archives':7 'beeps':15 'chip':17 'electronic':13 'icy':1A 'icyltap':4A 'l':2A 'monotonik':6 'mtk068':10,11 'or':16 'pico':18 'sense':5B,12 'tap':3A 'vol':8 'we':14
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'glitch', 'idm', 'ambient', 'netlabel', 'electronic']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621705432.16072  (2021-05-22 19:43:52)
                             'size'  5109332