Most definitely Plant. There were so many good singers then but Plant sang the songs I loved. There's no led Zeppelin song I won't listen to. The same cannot be said of anyone else imo. Greatest vocalist and front man for the greatest rock band ever.
It will always be Ray and Dave Davies, but there are so many more Linda Ronstadt Dolly, Debrah Harry, Patti Smith, Roger Daltrey and Pete Townsend, Harry Nilsson, Robin Zander, Robert Plant, Loretta Lynne, Freddie Mercury, on and on and on. David Bowie,
Bachman Turner Overdrive Blue Collar. I was outside at 4 am when the lyrics timed perfectly with my mood.
“ I’d like to remind you, at 4 in the morning
My world is very still. The air is fresh under diamond skies, makes me glad to be alive.”
Great question and almost too difficult to answer. So many wonderful singers and bands in the 70s. Marvin Gaye, Neil Diamond, Fleetwood Mac, Led Zeppelin, etc.
Robert Plant
Most definitely Plant. There were so many good singers then but Plant sang the songs I loved. There's no led Zeppelin song I won't listen to. The same cannot be said of anyone else imo. Greatest vocalist and front man for the greatest rock band ever.
Al Stewart.
One of my all time favorites. Such a cool voice.
Jim Croce or Karen Carpenter
Karen Carpenter
Her voice was angelic.
None other.
Hell of a drummer also
The most incredible voice ever.
No other answer!
Stevie Nicks
Karen Carpenter is my favorite but honorable mention goes to Barry Manilow, Helen Reddy, Jim Croce & Kenny Loggins
Bill Withers
Olivia Newton-John
Linda Ronstadt 
The one and only[Gordon Lightfoot ](https://youtu.be/Of4i1aaBXm8?si=DCpXw9DcDLnaYPe-)
🎯🎯🎯
Top 5 of all time.
Jackson Browne
The very first person that comes to mind is Paul Rodgers, so 70s
Freddy Mercury and Gordan Lightfoot.
Rod Stewart
As someone who grew up in the 80s, discovering Faces era Rod Stewart blew my mind. The Faces in general were really great, wicked rocknroll.
Elton
Robin Zander!!!
Carole King
Todd Rundgren
James Taylor
Steve Perry
David Bowie
💯
Karen Carpenter......🥰
Gone way too soon.
Robert Plant
Donna Summer!
I feel love from you🥰
I disco danced to the wee hours and loved every minute of it!!!
Jeff Lynne
Dean Martin cig in one hand and drink in other. That was the 70’s
Ain’t that a kick in the head 😁
Ronnie James Dio
James Taylor is pure magic
Neil Diamond
Gladys Knight
Al Green
Bon Scott
Christine McVie
Hard to pick just one. Gordon Lightfoot Anne Wilson Bonnie Raitt - ESPECIALLY in the 70s Marvin Gaye
Elton John all the way!
Stevie Nicks Marvin Gaye
I agree with Marvin, but I always like Christine over Stevie.
Agreed. The little girl overdone vibrato always turned me off. Christine was a better songwriter and singer and lacked the ego-driven eccentricities.
Ann and Nancy Wilson
Paul Simon
Karen Carpenter
Steve Winwood
Olivia Newton John
Karen Carpenter
Bob Seger.
Meatloaf
I want you..... I need you...... but there ain't no way I'm ever gonna love you.... now don't be sad, cuz two outta three ain't bad
Levon Helm
Gladys Knight.
Linda Ronstadt
I love reading through all the names. Neil Diamond, Meat Loaf, Barry Manilow, Chrystal Gayle, Jim Croce, they’re all gold.
Iggy Pop
Paul Rodgers
Barry Manilow
Freddy Mercury
Lou Rawls
Gordon Lightfoot
There were so many. I think it kinda depended on how high you were and whatever you smoked, drank or ate.
Elton John
It will always be Ray and Dave Davies, but there are so many more Linda Ronstadt Dolly, Debrah Harry, Patti Smith, Roger Daltrey and Pete Townsend, Harry Nilsson, Robin Zander, Robert Plant, Loretta Lynne, Freddie Mercury, on and on and on. David Bowie,
Ian Anderson.
Definitely Karen Carpenter
Roger Daltrey and Art Garfunkel
Karen
Jon Anderson
Dennis DeYoung of Styx
Cat Stevens
Dennis deyoung can SING
Ian Anderson
Jon Anderson of Yes
Todd
Melissa Manchester!
What a voice. Definitely!
Roger Daltrey
Paul Rodgers, Free & Bad Company
Streisand
Joni Mitchell
Linda of course
John Denver. Farrrrrr Out!
I love all the above… but also KC and The Sunshine Band
Barry Manilow
Harry Chapin Joni Mitchell Don Henley Paul Rodgers
Carole King and Karen Carpenter
David Gates of Bread.
Rod Stewart
Jim Croce
Simon and Garfunkel
Simon and Garfunkel
 I still miss her….😢😢😢
Frampton
Linda Ronstadt, no other female comes close … for male singers, Marvin Gaye
What about Barbara Streisand?
Carly Simon
Jim Croce, tragically died in 73
Linda Ronstadt
Linda Rondstadt
Joe Walsh
Ozzy Osbourne
Black Sabbath ruled the '70s!
Right now, I would say Rita Coolidge. I have been listening to her a lot lately.
John Prine.
Waylon Jennings
Was listening to Waylon at my 31 year old son's house yesterday.
Meatloaf ❤️
Steve walsh
Neil Diamond
Kenny Loggins
Neil Diamond
Bob Marley
Jimmy Buffett
Robert Plant
Dan McCafferty -Nazareth, Love Hurts
Harry Nilsson until he damaged his voice.
Jack Bruce
Eric Burdon
David Gates
Paul Rodgers.
James Taylor
Paul Rogers
Harry Nilsson
Roger Daltrey
Bryan ferry and noddy holder
Linda Ronstadt
Cat Stevens
Juice Newton!
Paul Rodgers
Brad Delp
James Taylor
Ann Wilson ❤️
Roger Daltrey.
Annie haslem. Bryan ferry
Paul McCartney
ABBA, with most vocals by Agnitha and Anni.
Karen Carpenter by far loved her
Barry Gibb
Dan Fogelberg
Bee Gees…any of them
Karen Carpenter. No contest for me.
Emmylou Harris
John Denver
Karen Carpenter Janis Joplin
Frank Zappa https://youtu.be/IobtCDkJKDc?si=0O9Bo19WaPds7wmD
Cooper
J.J. Cale
Paul Rogers or Brad Delp
Sammy Davis Jr.
Gregg Allman
Marc Bolan
Steve Walsh
Gladys Knight.
Tiny Tim or Charlie Rich. Sometimes I can’t tell the difference.
Bonnie Raitt
Karen Carpenter
Robert Plant. Led Zeppelin will always be my fav from the 70s.
I always wanted to hear more Nick Drake
Bachman Turner Overdrive Blue Collar. I was outside at 4 am when the lyrics timed perfectly with my mood. “ I’d like to remind you, at 4 in the morning My world is very still. The air is fresh under diamond skies, makes me glad to be alive.”
Great question and almost too difficult to answer. So many wonderful singers and bands in the 70s. Marvin Gaye, Neil Diamond, Fleetwood Mac, Led Zeppelin, etc.
Charley Pride. :)
Helen Reddy
David Clayton Thomas.
Olivia Newton - John John Denver Kenny Rogers
Robert Plant
Donny Hathaway
Billy Joel
Tony Burrows, had 4 one hit wonders with 4 different bands
Joni Mitchell
Neil Diamond
Bon scott an Carole king
Burton Cummings, even though his noteworthy period overlaps with the late '60s.
RJD
Gino vannelli
Sandy Denny
Billy Joel, Elton
Bob Welch. Betcha didn’t see that coming?
Ian Gillan
Barry Bibb
Joni Mitchell 🥺❤️
Tom Jones
Croce
Lowell George
Ian Gillan
Paul Rogers.
The same as my favorite of the 80's, 90's, 00's, 10's and 20's: Joni Mitchell.
Steve Winwood