By 1971, the group were still struggling to maintain a strong musical direction. From January to July they recorded "Santana III". Released in September 1971, the album also reached number 1 on the US "Billboard" 200. At the peak of the band's popularity, the album was the last to feature its classic Woodstock era line-up. Santana explained that there was a lot of unnecessary internal resentment and that managerial problems contributed to the problem, leading to Graham's dismissal. That year, they performed at a concert in Accra to commemorate Ghana's 14th Independence Day. The concert was filmed and released as "Soul To Soul" in theaters.