Sorry your device cannot play the demos.

We have developed our site following recognized web standards and checked it against many browsers/devices (PC, tablet, smartphones) running Windows 10 and Android. The site has also been additionally validated using Google's and other companies' checking tools.

We cannot check against Apple devices since our software house does not develop for those devices and hence we have none.

We can not even help you troubleshooting your problem since we have no experience with those devices, and the little we know is that they are well known to use non-standard proprietary solutions (which might not play well with those used by everybody else).

All we can advice is to try to use a Windows 10 or Android device. Our site is fully responsive and hence is perfectly usable on any screen size (from mobile to desktop).
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Groovyband Live! - Realtime Arranger Software