During these early years Purcell had already put forth specimens of his talent for musical composition. In 1667 Playford published a little three-part song entitled, "Sweet Tyraness, I now resign," which Dr. Burney has included in his history under the supposition that it was composed by Purcell's father; but there is reason to believe that it was the composition of the boy who, at the date of publication, was nine years of age. Possibly the music was originally intended as an air or song for a single voice, as we find it published in this form in 1678, in a work called _New Ayres and Dialogues_. This collection contained five other songs by Henry Purcell. When Purcell was eleven years old, he essayed his powers in the composition of music for a piece called "The Address of the Children of the Chapel Royal to the King, and their Master, Captain Cooke, on his Majesties Birthday, A.D. 1670, composed by Master Purcell, one of the Children of the said Chapel."[13] It is also probable that in this youthful time Purcell composed the music to _Macbeth_, now commonly associated with the name of Matthew Locke. That the latter did compose music for _Macbeth_ is certain, as some of it is still in existence, but it does not bear the slightest resemblance to that popularly known as his. In favour of Purcell, it may be noted that the _Macbeth_ music has many Purcell-like touches; that a copy of the score in Purcell's youthful hand is in existence;[14] that many old MS. copies of the music have his name attached as composer; and that he was entitled to the credit of it was believed by Dr. William Hayes, Dr. Philip Hayes, Dr. Arnold, and many other eminent musicians. The music itself is clearly an elaboration and development of a series of short movements composed by Robert Johnson for Middleton's play of _The Witch_.[15] It must not be forgotten that many of Purcell's anthems now in use in our cathedrals were the product of his youthful pen and genius whilst he was still a pupil of Cooke. Captain Cooke, the soldier musician, died, as previously stated, in 1672, and was succeeded in his appointment as "Master of the Children of the Chapel" by one whose nature, genius, and scientific knowledge of music must have stimulated and excited in a special manner the dawning powers of the youthful musical company committed to his charge, and the force of whose example must have proved of the greatest service to Purcell. This man was Pelham Humphreys;[16] he had been educated in the Chapel Royal under Captain Cooke, where his abilities and his personal attractions made a strong impression on Charles II. In Nov., 1663, Pepys made the following entry in his Diary: "The anthem was good after sermon, being the fifty-first psalme, made for five voices, by one of Captain Cooke's boys--a pretty boy. And they say there are four or five of them that can do as much. And here I first perceived that the king is musicall, and kept good time with his hand all along the anthem."