Another notable acoustic guitar is the Spanish-made instrument on which Clapton composed the compelling, beautiful "Tears in Heaven, " which he wrote after his 4-year-old son Conor's tragic death.

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Tarplin was one of the group's original members and co-wrote several of their hits including Tracks of My Tears, which was released in 1965.

BBC: Miracles guitarist Marv Tarplin dies at 70