Here is a sight we're you can see and listen to samples of their music. Www.amazon.com/gp/product/B00005V5Q4/ref=cm_rdp_product_img www.soulfunkspecial.com/sylvers.htm
Whatever Happened To The 70's Family Music Group The "Sylvers"?
Well,you know,they were really &0's-ish...not that 70's music doesn't rule!!but old music gets kicked out,...and then the new stuff comes... 
They got older, moved onto other things (composing, producing, session musicians, other groups). They also reformed for two final LPs in 1981 and 1984 and then called it quits as a group. After all, they were a bubblegum pop group so what did you expect after the guys go bald and the girls get chunky?