The families of the band said: "The tragic circumstance that met Viola Beach and their manager Craig that fateful night in Sweden will not now define their lives.
"What will now define their lives and what they will be remembered for, forever, is the music they were so passionate about making together.
"For that, we will be eternally humbled and ever thankful to every single person who, by buying this glorious album, has invested in their lasting musical legacy."
Viola Beach had been championed by BBC Introducing, who invited them to play the Reading and Leeds festivals last year.
The young band's first single Swings & Waterslides reached number 11 in the wake of the tragedy, while Coldplay paid tribute by performing their song Boys That Sing at Glastonbury, hinting at what the future might have held.
'Legacy lives on'
"They were just so talented and they had so much going for them," said Loren Dakin, elder sister of drummer Jack.
"If they would have come home from this, it would have just snowballed from there. They would have made it."
She said listening to the album took her back to the pubs and clubs where she watched Viola Beach play as they started to gain a foothold in the music industry.
"It's very sad - but it's also beautiful," she said. "I can hear my brother drumming, I can hear Chris singing. It's like their legacy lives on.
"Sometimes I am quite destructive with the music, because I'll listen to it when I'm sad and it'll make me feel worse.
"But a lot of times I'll listen to it with friends or when I'm in an upbeat mood and it's beautiful. It's great music and they wanted everyone to hear it."