After the concert, attendee Nivi Feldman said: "I cried so much. It was heartbreaking. Alon's aunt and grandma were supposed to have come from Israel, but their flights were cancelled, so they joined us online. We tried to stay positive and send them strength from here to there."
The piano will remain at JW3 until April 19 with various activities scheduled, including singing sessions and concerts.
Organised by the UK Hostages and Missing Families Forum and JW3, organisers said: “The piano, open for public interaction, invites people to play and connect with the message Alon’s family wishes to convey: music transcends borders, reaching out to touch everyone, regardless of religion, nationality, race, age, or gender.
“The Yellow Piano has become a potent symbol of connection, unity, and solidarity.”
The first yellow piano was brought to Hostage Square in Tel Aviv by Ohel’s family, and installations have been introduced in New York, Paris and Amsterdam.