I’d say start by listening to the whole song several times and get familiar with the structure e.g. how many bars in each verse, chorus, any odd bits etc.
I used to map this out on paper but these days I use Excel - 1 cell for each bar. Get the lyrics off the web and paste them in Column A, then the chords in the cells to the right.
As you listen through the song see if you can identify a chord (or two) and start filling in your chart. To begin with don’t worry about the gaps, but stop and review as often as you need to. A few times around the song and your chart will begin to fill up. Once you’ve found a chord ask yourself “where else is this used in the song?” - listen out for it and fill them in.
As well as the bass line, the melody line will often contain chord tones. It’s a skill you’ll need to develop in listening to one bar of music and identifying the chord tones, maybe from several different instruments or voices. If there’s a chord-change within that bar it’s a bit harder
but you’ll start to get used to it. Good luck!
I used to map this out on paper but these days I use Excel - 1 cell for each bar. Get the lyrics off the web and paste them in Column A, then the chords in the cells to the right.
As you listen through the song see if you can identify a chord (or two) and start filling in your chart. To begin with don’t worry about the gaps, but stop and review as often as you need to. A few times around the song and your chart will begin to fill up. Once you’ve found a chord ask yourself “where else is this used in the song?” - listen out for it and fill them in.
As well as the bass line, the melody line will often contain chord tones. It’s a skill you’ll need to develop in listening to one bar of music and identifying the chord tones, maybe from several different instruments or voices. If there’s a chord-change within that bar it’s a bit harder