Exercising
Many writings talk about how Elvis exercised constantly. He practiced Racketball. He rode a stationary bike at Graceland. He practiced Karate.

Many writings talk about how Elvis exercised constantly. He practiced Racketball. He rode a stationary bike at Graceland. He practiced Karate.

Elvis said many times in interviews about what he was doing to maintain his voice. The first thing he quickly and instinctively would say was that he tuned his voice everyday. Which means he took around 45 minutes tuning his voice every day. That doesn't includ melody tuning. He would start melody vocalizing on the song "Lead Me, Guide Me." He played on the piano every song he sung.
Your ear listens and tunes into the frequency of the note while your voice matches it and you see and feel the notes on the keyboard. This conditions the subconsciousand muscles to sing the correct pitches. This is for people who are just starting and know how to form the chord of the scale but don't know the full fingering of the whole scale. Also good for a quick tuning.
Standard Tuning