Not quite sure who expected Perry to Rock in 2018?
Street Talk had 1 semi rocking song, Strung Out,
And the bonus track which most MR's would call rocking Dont Tell me Why your Leaving.
Against the Wall only had a couple "rockers" at best
FTLOSM actually had only 3 Rocking songs, most notably You Better Wait,
and also the unreleased track Lost Angles.
TBF had only 3 rockin