# Piano synth broken in v5 beta

**URL:** <https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014>\
**Category:** Support, Help & Resources\
**Created:** [July 5, 2026, 2:52pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014 "2026-07-05T14:52:02Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![garen](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/garen/32/1626_2.png) [@garen](https://in-thread.sonic-pi.net/u/garen)\
**Post date:** [July 5, 2026, 2:52pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014/1 "2026-07-05T14:52:02Z")

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Looks like piano synth is not working (does not make any sound) in v.5 beta releases. This code works in v4.6.0 but not in v5.0.0-beta4:

use\_synth :piano  
c\_major\_scale = [:c4, :d4, :e4, :f4, :g4, :a4, :b4, :c5, :b4, :a4, :g4, :f4, :e4, :d4, :c4]  
c\_major\_scale.each do |note|  
play note, release: 1.0  
sleep 0.5  
end

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**Author:** ![samaaron](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/samaaron/32/7_2.png) [@samaaron](https://in-thread.sonic-pi.net/u/samaaron)\
**Post date:** [July 5, 2026, 3:13pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014/2 "2026-07-05T15:13:25Z")

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Hi, yes, this is a known issue and will be resolved before the final release.

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**Author:** ![samaaron](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/samaaron/32/7_2.png) [@samaaron](https://in-thread.sonic-pi.net/u/samaaron)\
**Post date:** [July 5, 2026, 3:51pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014/3 "2026-07-05T15:51:37Z")

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@garen - how are you finding v5 otherwise?

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**Author:** ![garen](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/garen/32/1626_2.png) [@garen](https://in-thread.sonic-pi.net/u/garen)\
**Post date:** [July 5, 2026, 4:11pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014/4 "2026-07-05T16:11:19Z")

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I haven’t spent much time with it, but so far it feels very solid. The only reason I mentioned the missing piano sound is that everything else works surprisingly well, considering the amount of change you’ve put in. Thank you!

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**Author:** ![samaaron](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/samaaron/32/7_2.png) [@samaaron](https://in-thread.sonic-pi.net/u/samaaron)\
**Post date:** [July 17, 2026, 8:39pm UTC](https://in-thread.sonic-pi.net/t/piano-synth-broken-in-v5-beta/10014/5 "2026-07-17T20:39:54Z")

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Sonic Pi v5 RC1 is out now and includes the Piano synth 🙂

> **[Sonic Pi v5 Release Candidate 1 | Sam Aaron](https://www.patreon.com/samaaron/posts/sonic-pi-v5-1-164093369?utm_medium=clipboard_copy&utm_source=copyLink&utm_campaign=postshare_creator&utm_content=join_link)**
>
> Hey there, happy Friday and huge love to you wherever you are in the world. Today, it's time to open the vaults and let loose something that