But What was No. 1?

This is the chart from April 1st 1972.
But what was No. 1?
No. 20
What Is Life by Olivia Newton John
No 19
The Young New Mexican Puppeter by Tom Jones
No. 18
Back Off Boogaloo by Ringo Starr
No. 17
Heart of Gold by Neil Young
This track comes from the 1972 album Harvest and the single became a U.S. No. 1. If you listen carefully you will hear backing vocals from James Taylor and Linda Ronstadt.

No. 16
Son Of My Father by Chicory Tip
No. 15
Sweet Talkin’ Guys by Chiffons
Originally a hit in the U.S. in 1966 and came from the same group that sang Hes So Fine.

No. 14
Too Beautiful To Last by Englebert Humperdinck
No. 13
I Can’t Help Myself by Donnie Elbert
No. 12
Blue Is The Colour by Chelsea Football Team
No 11
It’s One Of Those Nights Yes Love by Partridge Family Featuring Shirley Jones and David Cassidy
No. 10
Got To Be There by Michael Jackson
No. 9
Floy Joy by Supremes
No. 8
Mother And Child Reunion by Paul Simon
No. 7
Desiderata by Les Crane
No. 6
Meet Me On The Corner by Lindasfarne
No. 5
Hold Your Head Up by Argent
No. 4
American Pie by Don Mclean
No. 3
Alone Again Naturally by Gilbert O’Sullivan
No. 2
Beg Steal Or Borrow by New Seekers

No. 1 ANSWER AT http://www.inthe1970s.com/2013/02/21/music-charts-april-1st-1972/