Harrison likened "If I Needed Someone" to "a million other songs" that are based on a guitarist's finger movements around the D major chord. The song is founded on a riff played on a Rickenbacker 360/12, which was the twelve-string electric guitar that McGuinn had adopted as the Byrds' signature instrument after seeing Harrison playing one in "A Hard Day's Night". When McGuinn told him this in Los Angeles, Harrison was appreciative of the recognition, particularly as his contributions to the Beatles were often overshadowed by those of Lennon and Paul McCartney. In late 1965, Harrison acknowledged the Byrds' influence on "If I Needed Someone" when he sent a copy of the Beatles' new album, "Rubber Soul", along with a message for McGuinn and Crosby, to Derek Taylor, the Byrds' publicist. In his note, Harrison said that the riff was based on the one McGuinn had played on the Byrds' adaptation of "The Bells of Rhymney", and that the rhythm was based on the drum part in "She Don't Care About Time". McGuinn later recalled: "George was very open about it. He sent record to us in advance and said, 'This is for Jim' – because of that lick 'The Bells of Rhymney'."