The prayers, good thoughts or good wishes and Kirtan become helpful to the departed souls. They can be of invaluable assistance to the dead. Prayers for the dead form an integral part of most of the religions. The Catholic Church conducts prayers for the dead.
Prayer acts on the principle of a radio station and broadcasts the waves of good thoughts just as the radio station broadcasts waves of sound.
Prayer or Kirtan is a mighty force which helps the departed souls in their progress towards heaven and their quiet passage through the intermediate state.
The departed souls remain in a state of swoon or unconsciousness immediately after death. They cannot feel that they are detached from their previous gross material bodies. Prayers, Kirtan and good thoughts from the relatives and friends can give real solace to the departed souls. They create a potent vibration and an awakening in their stupefied condition of mind and bring back their veiled consciousness. The souls begin to realise that they are not really in their gross material bodies.
Then they endeavour to cross the borderland, a narrow river of ether, which is known as Vaitarani by the Hindus, Chinavat bridge by the Parsis and Sirat by the Muslims.
The weeping and mourning and the uncontrolled grief of their relatives give them pains and drag them down from their astral planes. This may seriously retard them on their way to the heaven-world. This produces serious injury to them. When they are sinking peacefully and when they are ready to have glorious awakening in heaven, they are aroused into vivid remembrance of the mundane life by the weeping and wailing of their friends and relatives. Their thoughts produce similar vibrations in their minds and produce acute pain and discomfort.
Therefore, relatives and friends should do Kirtan and prayers for the peace of the departed souls. Then only they can really help and comfort them. If ten or twelve persons sit together and do Kirtan and prayer, it will be decidedly more powerful and effective. Collective prayer and Kirtan exercise a tremendous influence.
* * *
From http://www.experiencefestival.com/a/Sraaddha/id/9828