Mr. Big

Mr. Big is an American rock group, formed in Los Angeles, California in 1988. The band is a quartet composed of Eric Martin (lead vocals), Paul Gilbert (guitar), Billy Sheehan (bass guitar), and Pat Torpey (drums); The band is noted especially for their musicianship, and scored a number of hits. Their songs were often marked by strong vocals and vocal harmonies. Their hits include "To Be with You" (a number one single in 15 countries in 1991) and "Green-Tinted Sixties Mind".

source: Wikipedia