California’s “Hit Making Machine” Called “The Grass Roots” Went Through Many Personnel Changes Through The Years. You Could Always Tell A Grass Roots Song Was Playing By The Excellent Horn Arrangements Of Jimmie Haskell. The Brass Became A Signature Sound For The Grass Roots. This Radio Smash From The Early 70’s Features The Late Rob Grill On Lead Vocals (who passed away in 2011), “Sooner Or Later” Reached #9 On The Billboard “Hot 100” In The Summer Of 1971. Radio Station Jingle Introduction From LA’s 93KHJ! Hear it on internet radio kvkvi.com