“The Blow’s “Think About Me” is technically a synth-pop song, but “synth-pop” usually implies a certain weightlessness, a slick blur of machine and human. The synthesizers on “Think About Me” sag and groan, like they were meant for timid library music and have been conscripted to run a marathon they haven’t trained for. The duo, Melissa Dyne and Khaela Maricich, worked hard for this wobbly, uncerta”