A colleague posed a very interesting question:

*“I am looking for any music/music math wizard help me figure this out. If I am moving the pitch of a song up by 50 cents (a quarter step?) What frequency is A instead of 440?”*

Sounded like the kind of math challenge I like:

## The answer is 452.893Hz

**To test and confirm that it’s calculating properly, this is upĀ 100 cents making G# 440**

**This is down 100 cents making A# 440
**