In 2007, the fourth square was named after Andrei Petrov. 2 Sep 2008 the Park opened a sculptural composition "the First violin", dedicated to the composer's work.

The opening ceremony was attended by the Governor V. I. Matvienko and the widow of composer N. E. Petrova.

In the sculpture collection, "the First violin" is eight sculptures — artistic symbols of the Composer:

"Violin–Apple" as a symbol of temptation music.

"Violin-Slipper" — a symbol of musical experiment.

"The violin Woman" ("Muse of the composer") is a symbol of inspiration.

"Violin Chair" ("the throne of the Composer") is a symbol of musical pauses.

"Violin-Swan" ("Requiem") — the symbol of musical perfection.

"Violin-gramophone" — a symbol of classical music and two identical sculpture "Violin-Sphinx" is a symbol of protection of musical heritage.

As a dedication to Andrei Petrov's birthday, there will be a festival with various concerts in the square under the open sky.

In 2005, the composer Andrei Petrov took part in "Green wave", and in the square planted a tree at Kamennoostrovsky Prospekt.

In 2006, initiated by the famous St. Petersburg musician, the leader of the group "SP Babai" Michael Nowicki, they surrounded the tree by a fence in the form of a note, with a fragment of the song "Blue city", creating a kind of a memorial to the composer.