Looking on the internet deeply has found these results:

match the sound to the letter is the most popular phrase on the web.

match sounds to letters 119,300 results on the web	match the sound to the letter 1183,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
The chairman shall have full power to send or reply to letters concerning Supervisory Committee activities. The numbers could correspond to letters. Annex 1 to letter of 6 June 2008. Sounds to me like the renegade almost got you killed. Changes the mapping of clue numbers to letters. Sounds to me like you're his emergency contact. You know what happens to letters written in the stir. Postal services under universal service obligation related to letters	Squashed up against the trailers for forthcoming attractions, the letters are shrunk into illegibility or rattled off impossibly fast, to match the shorter length of the trailers. And sending the sound to my brain. To have control of auditory information means that the driver can adjust the volume and mute the sound to a virtually unperceivable level. But so far, none of the letters match the handwriting in our suspect's notebook. I can't get the sound to work but he's all over the news. A modern string said to match the sound of a Stradivarius. A modern string said to match the sound of a Stradivarius. And you think you can use the sound to figure out where the suspect was.

match sounds to letters

119,300 results on the web

match the sound to the letter

1183,000 results on the web

More popular!

The chairman shall have full power to send or reply to letters concerning Supervisory Committee activities.
The numbers could correspond to letters.
Annex 1 to letter of 6 June 2008.
Sounds to me like the renegade almost got you killed.
Changes the mapping of clue numbers to letters.
Sounds to me like you're his emergency contact.
You know what happens to letters written in the stir.
Postal services under universal service obligation related to letters

Squashed up against the trailers for forthcoming attractions, the letters are shrunk into illegibility or rattled off impossibly fast, to match the shorter length of the trailers.
And sending the sound to my brain.
To have control of auditory information means that the driver can adjust the volume and mute the sound to a virtually unperceivable level.
But so far, none of the letters match the handwriting in our suspect's notebook.
I can't get the sound to work but he's all over the news.
A modern string said to match the sound of a Stradivarius.
A modern string said to match the sound of a Stradivarius.
And you think you can use the sound to figure out where the suspect was.