Who helped hip hop cross musical genres?

Hip hop crossed musical genres with the help of several influential artists and producers, notably Run-D.M.C., who famously collaborated with Aerosmith on "Walk This Way," blending rap and rock. Additionally, artists like Jay-Z and Kanye West incorporated elements of pop, R&B, and electronic music into their work, further expanding hip hop's reach. Producers like Pharrell Williams and Dr. Dre also played crucial roles by experimenting with diverse sounds and collaborating with artists from various genres.