Related Clues:

• A few backtracked, eliminating zero spaces in printed material
• "Mom" has two
• Focus of a Stockholm museum whose slogan is "Walk In. Dance Out."
• Trio in "mammal"
• Band whose jukebox musical led to a pair of films
• ___ Voyage, long-running London-based holographic concert
• Supergroup formed by Agnetha, Anni-Frid, Björn and Benny
• Personnel in ambulances
• "Ammonium" has three
• Outskirts of Mannheim?
• Prominent Swedish group ... or a structural hint to 17-, 28-, 46- or 62-Across
• "The Name of the Game" pop quartet
• "Voyage" pop group
• Ambulance crew initials
• Many letters in "mummy"