Easter is the celebration of Jesus Christ's rising from the dead (His Resurrection) after His crucifixion which took place on what we now term Good Friday.
Easter is usually celebrated on the first Sunday after the full moon following the Vernal or Spring Equinox on March 21st. This can be any Sunday between March 22nd and April 25th. It is the most sacred of all the Christian holidays or celebrations.
Christ's return (or rising) from death is called the Resurrection. According to the scriptures, Christ's tomb was empty three days after His death, which is commemorated on Good Friday. His followers saw Him and talked to Him after this. Christians therefore believe that they have the hope of a new life (an everlasting life in Heaven) after their earthly death.
Here you have Easter´s songs