Complex sentence: ZZ Top is a rock band formed in 1969 in Houston, Texas by bassist and lead vocalist Dusty Hill, guitarist and lead vocalist Billy Gibbons (the band's leader, main lyricist and musical arranger), and drummer Frank Beard.
Split into simpler sentences: ZZ Top is a rock band formed in 1969 in Houston, Texas. Current band members are bassist and lead vocalist Dusty Hill, guitarist and lead vocalist Billy Gibbons (the band's leader, main lyricist and musical arranger), and drummer Frank Beard.