Possible Clues:

• ''Key ---'' (Bogart film)
• Very slow, in music
• Bogart classic 'Key ___'
• ''Key ---'' (Bogart/Bacall film)
• Mus. slow movement
• Moderately slowly
• It sounds as if ith might have a handle to make Laurence leave so slowly
• Might Laurence have a go-slow with the music?
• Slow and dignified, like Handel's composition
• Musically in slow tempo and dignified style