Tekstowo backend does not return lyrics any more

[snejus]

Problem

With only tekstowo backend enabled in my configuration:

lyrics:
  sources: [tekstowo]

And trying to fetch lyrics:

$ beet -vv lyrics artist:kendrick -f
user configuration: /home/sarunas/.config/beets/config.yaml
data directory: /home/sarunas/.config/beets
plugin paths: 
fetchart: google: Disabling art source due to missing key
inline: adding item field label_or_albumartist
inline: adding item field singleton_track_artist
inline: adding item field track_artist
inline: adding item field album_name
inline: adding item field track_identification
inline: adding item field withdrawn
inline: adding album field multiple_artists
Sending event: pluginload
library database: /home/sarunas/.music/beets/library.db
library directory: /run/media/sarunas/music/Music
Sending event: library_opened
Parsed query: AndQuery([SubstringQuery('artist', 'kendrick', fast=True)])
Parsed sort: NullSort()
lyrics: lyrics not found: 36218 | 2012 / Swimming Pools (Drank): Kendrick Lamar - Swimming Pools (Drank)
lyrics: lyrics not found: 43230 | 2015 / To Pimp a Butterfly: Kendrick Lamar - For Free? (interlude)
lyrics: lyrics not found: 43231 | 2015 / To Pimp a Butterfly: Kendrick Lamar - King Kunta
lyrics: lyrics not found: 43234 | 2015 / To Pimp a Butterfly: Kendrick Lamar - u
lyrics: lyrics not found: 43235 | 2015 / To Pimp a Butterfly: Kendrick Lamar - Alright
lyrics: lyrics not found: 43236 | 2015 / To Pimp a Butterfly: Kendrick Lamar - For Sale? (interlude)
lyrics: lyrics not found: 43237 | 2015 / To Pimp a Butterfly: Kendrick Lamar - Momma
lyrics: lyrics not found: 43238 | 2015 / To Pimp a Butterfly: Kendrick Lamar - Hood Politics
lyrics: lyrics not found: 43241 | 2015 / To Pimp a Butterfly: Kendrick Lamar - The Blacker the Berry
lyrics: lyrics not found: 43242 | 2015 / To Pimp a Butterfly: Kendrick Lamar - You Ain't Gotta Lie (Momma Said)
lyrics: lyrics not found: 43243 | 2015 / To Pimp a Butterfly: Kendrick Lamar - i
lyrics: lyrics not found: 43244 | 2015 / To Pimp a Butterfly: Kendrick Lamar - Mortal Man
lyrics: lyrics not found: 43232 | 2015 / To Pimp a Butterfly: Kendrick Lamar ft. Bilal, Anna Wise, & Snoop Dogg - Institutionalized
lyrics: lyrics not found: 43233 | 2015 / To Pimp a Butterfly: Kendrick Lamar ft. Bilal, Anna Wise, & Thundercat - These Walls
lyrics: lyrics not found: 43229 | 2015 / To Pimp a Butterfly: Kendrick Lamar ft. George Clinton & Thundercat - Wesley's Theory
lyrics: lyrics not found: 43239 | 2015 / To Pimp a Butterfly: Kendrick Lamar ft. James Fauntleroy & Ronald Isley - How Much a Dollar Cost
lyrics: lyrics not found: 43240 | 2015 / To Pimp a Butterfly: Kendrick Lamar ft. Rapsody - Complexion (A Zulu Love)

No lyrics are found, even though just a couple of days ago I could find them using the
same command with tekstowo backend.

I had a look at Tekstowo search page and discovered that search results are now being displayed within a Google search container.

I attempted to curl the same URL

$ curl 'https://www.tekstowo.pl/wyszukiwanie-zaawansowane,?q=kendrick+lamar+wesley' -s | grep -i wesley
                        <meta property="og:url" content="https://www.tekstowo.pl/wyszukiwanie-zaawansowane,?q=kendrick+lamar+wesley">

Unfortunately the response does not provide anything we could parse, which I suspect is
the main issue here.

[snejus]

Tekstowo has been reliably returning lyrics for a long time, so this is not great. I am going to attempt to handle this by skipping the search and trying to get the lyrics directly. See some of the URLs to their lyrics pages:

• https://www.tekstowo.pl/piosenka,kendrick_lamar,wesley_s_theory.html
• https://www.tekstowo.pl/piosenka,pink_floyd,pigs__three_different_ones_.html
• https://www.tekstowo.pl/piosenka,tinchy_stryder_ft__n_dubz,number_1.html

So we can try and form these for our queries.