THEME:   synonyms for "high" starting four phrases                                             
GOOD ONES:                        Dedicated lines?   ODE [not phone lines]                                                                        
BTW:                        Debussy's "slow"   LENTE [I had LENTO for the music direction, which would be correct, and appropriate in English, if the "slow" had been concerning music and not "slow" in the general sense; but as it refers to the French word for "slow," it does not belong in an English puzzle.  AND if the clue had 
Claude instead of 
Debussy, I would not had to write over my incorrect answer! 

]                                                
RATING: 
                        Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun