Clue: Group seen in late-night hours?

Answer: AEIOU

Length: 5

---

Similar Clues:

• Late-night monologue inspiration (NEWS with 4 letters)
• Late hours, informally (NITE with 4 letters)
• Pop group that inspired a 2001 Broadway musical (ABBA with 4 letters)
• Group that inspired "Mamma Mia!" (ABBA with 4 letters)
• Group that sometimes includes Y (AEIOU with 5 letters)
• First group to get invites (ALIST with 5 letters)
• First group to get invitations (ALIST with 5 letters)
• First group to be invited (ALIST with 5 letters)
• First group of invitees (ALIST with 5 letters)
• Group including G.P.'s (AMA with 3 letters)