When we listen to music whether we know it or not we tend to pick songs driven by emotion. For example how many people listen to sad depressing songs as they are getting ready to go out for a party? Nobody, a person usually listens to music that gets them hype and ready to dance.
You have to remember that these effects and produced variations of tone have to have emotion behind it or there is no connection. This is the hardest thing to get for the singer the emotion has to be real. That is why it is best to think of an experience from the past you had that involves you. Also situations that someone has confided in a person or that you witnessed can provide help with emotional connection. To have great psychological output with a particular song it is widely agreed that the artist have written the lyrics. Now if you don’t have interest in writing lyrics then just refer to the prior section above for tips on having an emotional connection to the music.
In order for you to go out as an entertainer night and output the same level of emotional passion in each song you need a certain degree of endurance. The audience can tell when emotions are fake and they can also tell when a performer is exhausted or can’t hang with the overall tempo of the song. In order to move right, keep the vibe going as well as know how to sing well throughout the whole performance with a superior singing method your endurance will be paramount. As always “practice makes perfect” the more you practice properly the more stamina you will have in your singing voice. You can take all of this as a speck of aaron anastasi micro vocal lessons on how to sing well and perform. I hope an individual apply these methods for better onstage stamina onstage with great feelings.