Only four take on Islington Vodafone Oaks favourite Islington will face four rivals when she bids to further her Classic claims in the Stg£50,000 Tattersalls Musidora Stakes at York tomorrow.Sir Michael Stoute`s filly has been a warm order in the ante-post markets on the Epsom showpiece since the form of her Newbury maiden win was franked in fine style by runner-up Fragrant View at Chester last week.She is as low as 9-2 with William Hill.Her opposition tomorrow is headed by Pretty Polly Stakes third Half Glance, who was added to the field by Henry Cecil when the race was reopened for entry.Ed Dunlop saddles Fillies` Mile fifth Fraulein, while Barry Hills, the trainer of Fragrant View, relies on Zetland Stakes winner Alexander Three D.The line-up is completed by Jeremy Noseda`s Spinnette, whose one run as a two-year-old saw her finish runner-up in a Listed event at Newmarket.