Songs are the most popular study method that produces the least measurable progress. That is not because music is useless — it is because most people use it as background noise and expect it to work like a lesson.
What music genuinely gives you
Rhythm, stress patterns and the sound of the language at natural speed. Lyrics stick in memory in a way sentences from a book never do, and they stay for years. It is also the cheapest way to keep a language in your ears on days when you will not sit down to study anything.
What it will not do
Songs bend word order, drop words to fit the metre and use vocabulary nobody says out loud. A phrase learned from a lyric is quite often one you should not repeat in conversation. Passive listening while doing something else teaches almost nothing. The track has to be in your attention, not behind it.
Use one song, not a playlist
Pick a single track and work it: listen once, read the lyrics, listen again while reading, then listen without. Four passes on one song beats an hour of shuffle. Then sing along. Singing forces your mouth through the sounds at speed, which is the one thing passive listening cannot give you.
Choose slow, clear and modern
Ballads and hip-hop with clear diction work; heavy production, shouting and old recordings do not. Anything where you cannot separate the words is not a study text, however much you like it. Translations of songs you already know in your own language are a good shortcut — you already have the meaning, so the words attach immediately.
Music is excellent for ears, rhythm and memory, and poor for grammar and usage. Work one song properly and keep the playlist for company.