"I Can Hear You Calling" (Three Dog Night)

Three Dog Night doesn't really get its due in the world of 70s rock.  The main gripe of rock critics back in the day was that they didn't write their own material.  Thing was, they had a knack for picking hellaciously catchy songs by great songwriters (Hoyt Axton, Harry Nilsson, and John Hiatt, to name a few) and then (re)interpreting them perfectly.
A good example is "I Can Hear You Calling"—an album track from Naturally (1970) and also the B-side of their most famous single, "Joy To The World" (an Axton tune).  
The song was written and originally performed by the Canadian band Bush, a funk-influenced hard rock band that toured with Three Dog Night in 1970.
The original version by Bush is not bad, riding a catchy, bass-heavy groove.  It kind of feels like distant relative of "Funk #49" by The James Gang (which, oddly enough, Bush's lead guitarist, Domenic Troiano, joined in 1971 after Bush disbanded).
But Three Dog Night's version bests the original for three reasons: the soaring three-part harmonies of vocalists Danny Hutton, Chuck Negron, and Cory Wells; keyboardist Jimmy Greenspoon's skittering Hammond organ; and drummer Floyd Sneed's syncopated cowbell percussion.  
If you listen to no other part of this track, fast-forward to the 1:36 mark, and check out the drum break.  It's as simultaneously tight and loose as anything that Jabo Starks and Clyde Stubblefield played on James Brown's most famous records.
In all, the band had a wealth of talent and sold a wealth of records, even if the praise wasn't exactly forthcoming from the music press.