sentences:  In addition to Jagger and Richards' songwriting partnership, they have also produced or co-produced numerous Rolling Stones albums under the pseudonym The Glimmer Twins.Jagger and Richards have different recollections about their first songwriting endeavours but both credit manager Andrew Loog Oldham as the catalyst for their collaboration.Richards agrees that it was Oldham who pressed the pair to write songs after the duo had first emphasized other people's material; Oldham noted that there weren't that many obscure great songs out there for the band to cover.