Thomas Juth rebalances a lead vocal that started life too dark. The planned mic broke, so a darker-sounding U47 was used instead, and console EQ was pushed hard to brighten it back up.
To deal with the harshness that boost brought out, he reaches for FabFilter Pro-Q3 and sets up a dynamic dip around 8k, only kicking in when things get too sharp.
To prevent the vocal from becoming dull, Juth brings in a Harrison EQ and boosts around 4k to add presence, clarity, and character back into the vocal.
The takeaway is that this kind of back and forth is normal. Every EQ decision affects the next, and a vocal recording often needs some rebalancing before it settles.