“Wow” is a hit single released in 1979 from Kate Bush’s album Lionheart.
The sleeve typography uses Stymie Light in all caps. The exact typeface is uncertain because there are so many clones and look-alikes. Among digital fonts, Stymie SB ExtraLight from Scangraphic at least has the correct kerning. The weight of the K and B suggests that they may have been optically enlarged.