Singer-songwriter Adam Blackwood released a new album at the end of April. Encompassing a multitude of styles ranging from funk to new wave to piano rock, Blackwood delivers 11 tunes rife with plainspoken pop sensibility and charm. There’s an overarching theme here of anxiety’s devastating visits and physical manifestations, illustrated by Blackwood’s charismatic, theatrical vocal performances and forthright lyrics that aren’t afraid to get metaphorical and humorous. Adam Blackwood’s “Pessimistic Jellyfish” is the score of perpetual unease.