“The lyrics are sad but the music is sweet,” sings Anna Mernieks on the final track of the new Beams album before co-front woman Heather Mazhar comes in for the chorus, their voices combining to strike exactly the bittersweet balance the lyrics describe. It’s a fitting line given that Beams is a band that’s embraced contrasts from the start—even their name has opposing connotations, calling up images of something both solid and permeable, light and dark.