Passage
Sing unto him, sing psalms unto him; Meditate upon all his wondrous works.
Sing unto him, sing psalms unto him; Meditate upon all his wondrous works.
1 Chronicles 16:7 Then on that day David delivered first [this psalm] to give thanks to Jehovah through Asaph and his brethren.
1 Chronicles 16:8 Give thanks unto Jehovah, call upon his name; Make known his acts among the peoples.
1 Chronicles 16:9 Sing unto him, sing psalms unto him; Meditate upon all his wondrous works.
1 Chronicles 16:10 Glory in his holy name: Let the heart of them rejoice that seek Jehovah.
1 Chronicles 16:11 Seek Jehovah and his strength, Seek his face continually;
The verse centers on "sing", "psalms", "meditate", "upon", "wondrous", and "works". It is saying that the verse draws attention to "sing" and "psalms", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 8's "Give thanks unto Jehovah call upon his..." into verse 10's "Glory in his holy name Let the...", so "sing" and "psalms" belong inside that flow. In 1 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "sing" and "psalms" with trust shaped by these words, not by a vague optimism outside the passage.