In the case of "faulty" goods, the Sale of Goods Act 1979 (as amended) establishes that consumers are allowed a "reasonable time" within which to reject the goods for a full refund.
Music Corner classes a reasonable time as 7 working days from receipt of goods. During this time you, the consumer, is only required to "reject" those goods and seek a full refund.
The return of those goods can be requested soon after this 7 day period.
Music Corner accepts that in certain circumstances the packaging will have been opened and possibly even discarded. Where it is reasonable for a consumer to have taken such action, the goods should be returned in suitable alternative packaging by the safest method. It is acceptable that some goods may not be returned in an unused condition should the fault be discovered, in the case of books, in the latter pages.
Goods can only be refunded when they have been received. Music Corner will let you know when the goods have been received back into stock.
The law states, where a consumer properly rejects "faulty" goods, their remedy is for a full refund plus any relevant "consequential losses".