Everyone uses the music widget of the lockscreen and there are multiple tweaks that have been released to improve its appearance. Joining the long list is Helius 2, which is an updated version of the original tweak. Helius 2 takes a different approach when it comes to design as it adds a box with rounded edges that has all the control buttons, volume slider, artwork and song information. In addition to the stock Music app Helius 2 is also compatible with third-party music apps.
Helius 2 comes with a nice background artwork feature that you can enable or disable from the preference page. When this setting is enabled the tweak changes the background of the lockscreen according to the color of the artwork. This also has an effect on the background color of the artwork. With background artwork option you get a different looking lockscreen with every new song, which is kind of cool. Apart from that there are no settings to configure, the kill switch for the whole tweak being the only exception.
Helius 2 tweak is available in Cydia for $0.99 and supports both iOS 8 and iOS 7. It is available as a free upgrade for those who own the original version of the tweak. iPad support has not been added, yet.