Legendary Van Halen bassist Michael Anthony wrote an emotional (and also happy) letter on his Instagram page.

His Instagram post revealed a heartbreaking details of his grandson’s death. Here’s what he wrote:

“On June 22nd I am participating in the third “Walk and Play LA” at the LA Memorial Coliseum to support Children’s Hospital Los Angeles. There’s a family festival before and after the 3k walk with games, food, music( I might get up and jam again!) sports clinics with professional athletes and more for the whole family!

More importantly we raise money for CHLA so the doctors and nurses can continue to give the best life saving care to all children that go there. No one is ever turned away!

He continued and mentioned about tragic death of his grandson:

“We lost our grandson, Rex Michael Becerra to congenital heart disease at only two weeks old. We were blessed with the short time he was with us and I think about and miss him every day. You can find the link in my bio to the fundraising page.

You can also access the link on Mad Anthony’s Cafe Facebook page. I thank you from the bottom of my heart for any donation you can make to the hospital through me.”

Then, Michael gave an exciting news about his daughter. He also hinted at possible summer tour with The Circle, and wrote:

“On a side note, we recently found out my daughter Elisha is pregnant again, and I cannot wait to have another grandchild!!😄 I’ll see you out on tour soon with The Circle!!! #walkandplayla #chla #familylove #careforeverychild #familyfunday #missingourrex”

You can see the post below.

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On June 22nd I am participating in the third “Walk and Play LA” at the LA Memorial Coliseum to support Children’s Hospital Los Angeles. There’s a family festival before and after the 3k walk with games, food, music( I might get up and jam again!) sports clinics with professional athletes and more for the whole family! More importantly we raise money for CHLA so the doctors and nurses can continue to give the best life saving care to all children that go there. No one is ever turned away! We lost our grandson, Rex Michael Becerra to congenital heart disease at only two weeks old. We were blessed with the short time he was with us and I think about and miss him every day. You can find the link in my bio to the fundraising page. You can also access the link on Mad Anthony’s Cafe Facebook page. I thank you from the bottom of my heart for any donation you can make to the hospital through me. On a side note, we recently found out my daughter Elisha is pregnant again, and I cannot wait to have another grandchild!!😄 I’ll see you out on tour soon with The Circle!!! #walkandplayla #chla #familylove #careforeverychild #familyfunday #missingourrex

A post shared by Michael Anthony (@mad_anthony_bassman) on