How To Sing In Tune (Even If You Completely Tone Deaf...) - Melody Beats
How are Chinese tones used in songs? - Quora
Can You Learn to Sing If You're Tone Deaf? - YouTube
How To Sing Without A Nasal Tone - Arden Kaywin Vocal Studio
5 Easy Techniques to the Perfect Vocal Tone - Ramsey Voice Studio
Can the tone deaf learn to sing? - BBC News
5 Easy Techniques to the Perfect Vocal Tone - Ramsey Voice Studio
Tone Deaf? Join the 'Can't Sing Choir'
Beginning Singing: Expand Your Range, Improve Your Tone, and Create a Voice You'll Love - Kindle edition by Henny, John. Arts & Photography Kindle eBooks @ Amazon.com.
All Things Vocal Blog & Podcast by Judy Rodman: Vocal Tone: How To Change It