The band Glendale is launching their debut folk rock album "Illusion is the First of All Pleasures" and aims to sell 5,000 copies in the first 2 months by targeting an audience aged 23-30. Their marketing plan involves developing the band's image, building a fan base through performances and social media, and promoting the album through radio play, print interviews, and merchandise. Potential promotional materials include an album packaging design, tour poster, and social media mockups to engage the target audience.