Looking on the internet deeply has found these results:

a note to my friends is the most popular phrase on the web.

a note for my friends 1246,000 results on the web	a note to my friends 1364,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Although he left no note, friends say its unlikely he was able to cope with the... A great President, a great American I'd like you to give me a minute to write a note to my friends. My friend's notes were practically complete. I'd like to send some flowers and a note to a friend in Virginia. She received a note from a sick friend. Just leaving a note for Joey. I'm an old friend. Like my note said, a friend of yours sent me.	I'd like to send some flowers and a note to a friend in Virginia. Zac was my friend ever since I forged a note to get him out of PE in fourth grade. (CHUCKLES) Like my note said, a friend of yours sent me. Although he left no note, friends say its unlikely he was able to cope with the... As this wonderful year Draws to an end I send this note To family and friend I'd like you to give me a minute to write a note to my friends. She received a note from a sick friend. My friend's notes were practically complete.

a note for my friends

1246,000 results on the web

a note to my friends

1364,000 results on the web

More popular!

Although he left no note, friends say its unlikely he was able to cope with the...
A great President, a great American
I'd like you to give me a minute to write a note to my friends.
My friend's notes were practically complete.
I'd like to send some flowers and a note to a friend in Virginia.
She received a note from a sick friend.
Just leaving a note for Joey. I'm an old friend.
Like my note said, a friend of yours sent me.

I'd like to send some flowers and a note to a friend in Virginia.
Zac was my friend ever since I forged a note to get him out of PE in fourth grade. (CHUCKLES)
Like my note said, a friend of yours sent me.
Although he left no note, friends say its unlikely he was able to cope with the...
As this wonderful year Draws to an end I send this note To family and friend
I'd like you to give me a minute to write a note to my friends.
She received a note from a sick friend.
My friend's notes were practically complete.