Answer: peaks

AnswerCrossword Clue
PEAKSWhen song "tops off"
PEAKSAlps.
PEAKSPikes and others
PEAKSPikes et al.
PEAKSAlps
PEAKSZeniths
PEAKSBecomes weak, thin and sickly
PEAKSCrescendos
PEAKSRange features
PEAKSMaxima
PEAKSMountains
PEAKSThey have pointed tops
PEAKSMaroon 5: "Scaling New ..."
PEAKSWhat top song does
PEAKSMcKinley et al.
PEAKSAchieves a personal best
PEAKSApices
PEAKSReaches the ultimate
PEAKSBlanc and Rainier
PEAKSAchieves top performance
PEAKSWhipped egg white formations
PEAKSHas nowhere to go but down
PEAKSReaches a climax
PEAKSAcmes
peaksPEAK, to reach a maximum
peaksthe pointed top of something, esp. a mountain
peaksthe highest or most important point
peaksto reach a peak of activity, popularity, etc.
PEAKSBusy times
PEAKSReaches the top
PEAKS"Twin ..."
PEAKSSummits
PEAKSTops
PEAKSMaxes out
PEAKSMountain highs
PEAKS"Twin ...: Fire Walk With Me" (David Lynch film)
PEAKSHighest levels
PEAKSReaches a maximum
PEAKSHigh points
PEAKSEverest and others