"The way she switches to her younger voice at ease and makes her voice sound the same as back in the 70's proves yet again why she is a legend." Is this sentence correct?
I think you mean "with ease" rather than "at ease". Otherwise it is OK, but I would be inclined to add commas to break it up for readability: The way she switches to her younger voice with ease, and makes her voice sound the same as back in the 70s, proves yet again why she is a legend. I prefer "70s" to "70's".
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I think you mean "with ease" rather than "at ease". Otherwise it is OK, but I would be inclined to add commas to break it up for readability:
The way she switches to her younger voice with ease, and makes her voice sound the same as back in the 70s, proves yet again why she is a legend.
I prefer "70s" to "70's". Using apostrophes to indicate plurals is, generally speaking, h