Premise: Shahzad Hasan (also known as Shahi Hasan), is a Pakistani musician, record producer, occasional actor, bass guitarist, backing vocalist and music industry executive. Co-founding the pop and rock band, Vital Signs, with keyboardist Rohail Hyatt in 1986, he earned recognition of playing bass guitar and as an original member of Vital Signs.
Hypothesis: Bass guitar is the only instrument Shahzad Hasan plays.