Possible Clues:

• Visit the Caribbean, say
• Time needed by French composer making journey
• See 35-Across
• Top piece missing, composer might go by 12
• Have to, to tour
• See the world with tango composer
• Journey round Venezuelan capital later rearranged
• At end of all-night party, left to go
• Composer following up theme's initial progress
• Retirees often do it