Samson : Head On / Shock Tactics

Head On

 is the second

 studio album

 by British

 heavy metal band

 Samson 

released in 1980.

 The cover art features 

the band's masked drummer,

 Thunderstick.

 This is the first album

 with future

 Iron Maiden-frontman 

Bruce Dickinson 

on vocal duties

Shock Tactics

 is the third 

studio album 

by British

 heavy metal band

 Samson

 released in 1981.

 It was singer

 Bruce Dickinson's 

last one with the band

 before joining

 Iron Maiden 

who were coincidentally

 recording

 Killers, 

Their last album

 with 

Paul Di'Anno, 

in the same studio

 at the same time

 of Samson

LINK