Related Clues:

• Unlike a plane
• Straightforward
• Straight, in a sense
• Sequential
• Progressing sequentially
• Lacking variety
• Like some chant segments
• Not curved
• In a straight line
• Going from A to B, say
• Johnny in a 1937 song
• What Kenny G held for 45 minutes and 47 seconds
• Lacking range
• Foot variety
• Limited in range