Although Yoko Ono was blamed for breaking up one of the most successful bands of all time, there had been tensions brewing in The Beatles, as each of the four band members began to explore individual interests in solo projects at the end of the 1960s. The intensifying musical divergences became evident on the White Album, and the band would disband two years later. Following the split, Lennon became increasingly politically engaged and musically adventurous, collaborating with Ono on a number of albums and films.