The next year , Gaudio replaced Nick DeVito in the lineup , with Gaudio doubling as both keyboardist and guitarist , and Charles Calello replaced Majewski on bass ( Calello would soon return as the group 's arranger ) .
The next year , Gaudio replaced Nick DeVito in the lineup , with Gaudio doubling as both keyboardist and guitarist , and Charles Calello replaced Majewski on bass . 
 In 1960 , Calello left and was replaced by Nick Massi ( Calello would soon return as the group 's arranger ) .