- Richie Unterberger explores the history of the 33 1/3 LP, including its predecessor, the 78rpm record, the first commercial LPs, the pressing process, stereo vs. mono, and formats like the 7-inch/45rpm record.
- Gillian Gaar tackles those temples to the turntable: record stores. Inside, she examines the history of LP merchandising everywhere from department stores to headshops, Record Store Day, the artist in-store appearance, and swap meets and record shows.
- Martin Popoff pens a paean to the physical object itself, discussing the advent of the sleeve, the great LP covers, famous sleeve designers, liner notes and packaging, colored vinyl, and more.
- Matt Anniss looks at the collecting hobby and topics like obsessive collectors, what makes a great listening space, playing and caring for vinyl, collecting and vinyl in DJ and hip-hop cultures, and the mixtape phenomenon.
- Ken Micallef, a top hifi journalist, has the gearheads covered with explanations of turntables from portables to audiophile-quality units, the workings and parts of a turntable from motors and tonearms to plinths and cartridges, and the components of a system.
In the Groove is illustrated throughout with images of gear, listening spaces, record stores, sleeve art, and celebrities and musicians enjoying the vinyl hobby through the decades. Brief, entertaining sidebars cover topics like famous labels from Stax to Sub Pop, famous EPs, well-known record stores, milestone LP covers, a beginner's guide to grading, and formats that have challenged the supremacy of the LP, including 8-track, reel-to-reel, and cassette. Feel the groove with this effervescent ode to vinyl.