Blending throwback vibes of The Beatles and The Hollies with more recent groups such as Tom Petty & The Heartbreakers, Tommy Keene and The Jayhawks, “Must Be Love” is a snappy, ’60s-tinged, slick arranged bubbling tune with cranked-up guitars, bright echoing arpeggios, beautifully tight-knit harmonies, and plenty of hooks, filled with heart-racing romance.