Possible Clues:

• Frank ___, leader of the Mothers of Invention
• Frank —, US guitarist and composer
• Frank with the album 'Sheik Yerbouti'
• Frank —, US musician
• ''Virtuoso'' whom ''Rolling Stone'' also called ''satirical'' and ''eccentric''
• 'Montana' musician Frank
• '60s giant of hard rock
• Frank --, 1940-93, US rock guitarist, singer and composer
• Frank who performed 'Watermelon in Easter Hay'
• Rocker whose best-selling album was the punnily titled 'Sheik Yerbouti'